The Hidden Bat

Name: The Hidden Bat
Rating: 4.71 (83 reviews)

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The Hidden Bat

$69.99

$49.99

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Pattern · The Hidden Bat

Fit Reference

Match yourself to the closest body type to find your recommended size.

Build	Chest	Waist	Weight	Height	Size	Fit

**Recommended sizes computed from our garment measurements. When between sizes, size up.

Garment Measurements

All measurements are of the garment, laid flat (chest shown as full circumference = 2× flat width). Please allow ±1–3 cm. Between two sizes? Size up.

Size	Chest	Shoulder	Sleeve	Length

*Manually measured — may vary 1 inch (2–3 cm).

How to Find Your Size

How to measure a shirt: chest, shoulder, sleeve, length

Chest — lay a shirt you love flat, measure armpit to armpit, then double it.

Shoulder — from the seam of one shoulder straight across to the other.

Sleeve — from the shoulder seam to the end of the sleeve.

Length — from the highest point of the shoulder down to the hem.

Fit · Regular

▼

Slim Tailored Regular Relaxed Oversized

Product Description

More Than a Hawaiian Shirt.

From a distance, it’s a pattern.

Look closer, and there’s always more to discover.

Oceumi shirts are designed for vacations, weekends, beach days, backyard dinners, parties — and any ordinary day that could use a little more personality.

Distinctive from a distance. Unforgettable up close.

🌴 Why You’ll Love It

Linen-Touch Weave – Lightweight 100% polyester fabric with a natural, linen-inspired texture
Soft, Linen-Like Hand – Dry, comfortable feel against the skin
Lightweight & Breathable – Designed for warm-weather comfort
Quick-Drying – Easygoing comfort from the deck to dinner
Vivid All-Over Print – Crisp, expressive colors that bring the pattern to life
Fade & Wrinkle Resistant – Helps keep your shirt looking sharp throughout the day
Relaxed Camp-Collar Style – An easygoing silhouette made for casual wear

🧵 Product Details

Material: 100% Polyester
Fabric Weight: 120 GSM
Fabric: Linen-Touch Weave
Feel: Soft, dry, and linen-like
Weight: Lightweight
Fit: Relaxed Unisex Fit
Collar: Camp Collar
Print: All-Over Printed Design
Features: Quick-Drying, Fade Resistant & Wrinkle Resistant
Season: Ideal for Warm-Weather Wear

☀️ Made for Wherever the Day Takes You

Easy to dress up. Easy to keep casual.

Wear your Oceumi shirt for:

Vacations & resort days
Beach trips
Cruises & boat days
Backyard dinners & BBQs
Parties & social gatherings
Birthdays & celebrations
Weekend getaways
Everyday casual wear

Pair it with shorts and sandals for the beach, or chinos and clean sneakers when the evening calls for something a little sharper.

One shirt. Plenty of places to take it.

👕 Fit & Sizing

Oceumi shirts feature a relaxed unisex fit designed for comfortable, easy movement.

For the best fit, please check the Size Chart on the product page before ordering.

Men: Generally choose your usual size for a relaxed fit.

Women: Depending on your preferred fit, consider sizing down 1–2 sizes for a more fitted look.

If you are between sizes or prefer a looser, more relaxed fit, consider choosing the larger size.

Please note that measurements are taken with the garment laid flat and minor measurement variations may occur.

🎨 About the Pattern

At Oceumi, a pattern isn't just decoration.

Some designs are bold at first glance. Others hide small details, unexpected shapes, animals, or visual jokes that reveal themselves only when you look closer.

That's part of the fun.

A good Oceumi shirt should give someone a reason to notice it — and another reason to take a second look.

Designed for the second look. Made to start a conversation.

🧼 Care Instructions

To help keep your shirt looking its best:

Machine wash cold
Wash with similar colors
Use mild detergent
Do not bleach
Tumble dry low or hang dry
Do not iron directly on the printed surface

📦 Shipping & Delivery

Oceumi products are made to order and carefully prepared, quality checked, and packaged before shipment.

Processing & Production Time: 2–5 business days
United States: 7–14 business days
International Orders: 10–15 business days
Standard Tracked Shipping: $4.99

Processing and production time is separate from shipping transit time.

Once your order ships, you will receive a Shipping Confirmation email with available tracking information.

Please allow approximately 1–3 business days after shipment for tracking updates to begin appearing in the carrier's system.

Delivery times are estimates and may vary depending on destination, carrier operations, customs processing, and other logistics conditions.

For additional information about production, fulfillment, carriers, and delivery, please refer to our Shipping Policy.

💬 Need Help?

Have a question about sizing, your order, shipping, or a pattern?

We're happy to help.

Brand: Oceumi
Legal Entity: MILESSA COMMERCE LLC
Registered Address: 1500 N Grant St Ste R, Denver, CO 80203, United States
Email: support@oceumi.com
Available: Monday – Friday
Support Hours: 9:00 AM – 5:00 PM (MST)

Oceumi is a brand owned and operated by MILESSA COMMERCE LLC.

Every Pattern Is a Destination.

Shipping & Return

Shipping

Orders are processed within 2–5 business days.

United States: 7–14 business days after dispatch
International: 10–15 business days after dispatch

Once your order ships, you’ll receive a confirmation email with tracking information. Please allow 1–3 business days after shipment for tracking updates to appear.

Delivery times are estimates and may vary depending on carrier conditions.

Damaged or Incorrect Items

If your item arrives damaged, defective, or incorrect, contact us at support@oceumi.com with your order number and photos. We’ll provide an appropriate replacement or refund.

Returns

We offer a 30-day return policy for eligible items.

Items must be unworn, unwashed, and in original condition.
Oceumi covers return shipping costs for all eligible returns, including change-of-mind and incorrect-size returns.
Return shipping cost: $0.00
Restocking fee: $0.00

Please note: Standard made-to-order Oceumi products are eligible for return under our Return & Refund Policy unless otherwise stated. Personalized or customized items that are clearly identified as non-returnable before purchase are generally non-refundable for change of mind, but remain eligible for assistance if damaged, defective, or incorrect.

Size Chart

Oceumi Hawaiian Shirt

Please refer to the garment measurements below to find your best fit. All measurements are garment measurements, not body measurements.

Garment Measurements (Inches & CM)

Size	Chest (in)	Chest (cm)	Shoulder (in)	Shoulder (cm)	Sleeve (in)	Sleeve (cm)	Length (in)	Length (cm)
XS	35.4	90	15.75	40	9.5	24.2	28.2	71.7
S	39.4	100	17.24	43.8	10	25.4	29	73.7
M	43.3	110	17.99	45.7	10	25.4	30	76.2
L	47.2	120	19.49	49.5	10.5	26.6	30.8	78.2
XL	51.2	130	20.98	53.3	10.5	26.6	31.6	80.2
2XL	55.1	140	22.52	57.2	11	27.9	33.2	84.3
3XL	59.1	150	24.02	61	11	27.9	34.8	88.4
4XL	63	160	25.51	64.8	11.5	29.2	35.6	90.4
5XL	66.9	170	26.5	67.3	11.5	29.2	36.4	92.4

How to Measure

Chest: Lay a shirt that fits you well flat. Measure straight across from armpit to armpit, then double the measurement to get the full chest circumference.
Shoulder: Measure straight across from one shoulder seam to the other.
Sleeve: Measure from the shoulder seam to the end of the sleeve.
Length: Measure from the highest point of the shoulder down to the hem.

Size Disclaimer

This data was obtained from manual measurement of the product. Please allow a 1–3 cm difference due to manufacturing and manual measurement variations.

Fit Notes

All measurements shown above are garment measurements, not body measurements.
If you are between two sizes, we recommend sizing up for a more comfortable fit.
For the most accurate fit, compare the measurements above with a similar shirt you already own.

Need Help?

If you're unsure about sizing, contact us at:
support@oceumi.com

The Hidden Bat

Your cheapest item becomes FREE automatically at checkout.

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FIT REFERENCE

Model Info

Find the body closest to yours.

Mateo R.

Shirt Size: L
Shorts Size: 34
Height: 180 cm / 5'11"
Chest: 104 cm / 41"
Waist: 91 cm / 36"
Hips: 101 cm / 39.5"

Julian F.

Shirt Size: L
Shorts Size: 34
Height: 176 cm / 5'9"
Chest: 104 cm / 41"
Waist: 86 cm / 34"
Hips: 97 cm / 38"

Elias M.

Shirt Size: 2XL
Shorts Size: 40
Height: 178 cm / 5'10"
Chest: 118 cm / 46.5"
Waist: 108 cm / 42.5"
Hips: 115 cm / 45"

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5 stars: 59 (71%)
4 stars: 24 (29%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Some of the reviews shown are from related products the merchant grouped with this one.

Impressed

The print quality is excellent, the deep crimson and black looks even better in person. Feels smooth and not stiff, drapes really nicely. Love that the hidden stag you only see on a second look — people don't notice until they get close.

This means a lot, Dominic — thank you! Hope to see you back for another print soon. — The Oceumi Team

Solid, minor nitpick

Got so many compliments wearing this to a fall dinner. Ordered my usual M and it fits perfectly. Color is very slightly deeper than the website photo, still great though.

Thanks for the note, Tara! Screens can shift the shade a touch — glad the crimson & black stag print still landed well in person. — Oceumi

Really nice shirt

The detail on this is impressive, so much going on in the pattern. The little hidden halloween details you spot up close is a nice touch, always a conversation starter. Runs true to size, the L has a nice easy drape. Took off a star because it was a little wrinkled out of the package, but a quick steam fixed it. Soft feel and it stays cool, perfect for summer.

Thanks, Rachel! You're right that it can arrive with a few creases from packing — a quick steam sorts it out, glad it came up great. — Oceumi

Excellent quality

Bought it for a fall get-together and it was a hit. The best part is the little hidden Halloween details you spot up close, such a cool detail. True to size, got the XL for my 5'8 frame and it's just right.

Thank you, Shane! We put a lot into the pumpkin-orange Halloween pattern, so glad it shows. — Oceumi Support Team

Better than expected

Got so many compliments wearing this to a night out. Runs true to size, the L has a nice easy drape. Really comfortable, the fabric moves well. Love that the tiny bat motifs hidden in the pattern — people don't notice until they get close.

Nice print, small note

Print is crisp and the colors didn't fade after washing. Runs true to size, the M has a nice easy drape. Lightweight and breathable, didn't feel hot at all. Arrived within the window they gave, well packaged. Color is very slightly deeper than the website photo, still great though.

Thanks for the note, Danielle! Screens can shift the shade a touch — glad the crimson & black stag print still landed well in person. — Oceumi Support Team

Exactly what I wanted

Wore it to a pool party and got a ton of compliments. Sizing was accurate, M fit like I expected.

Love the shirt. Saving it to wear to a wedding next month. Thanks.

Thank you so much, Brian! We’re thrilled you love The Hidden Bat. A wedding sounds like the perfect occasion for it—we hope you have a wonderful time and receive plenty of compliments!

Nailed it

Honestly looks more expensive than it is. Fits true to size — I'm 6'1 170lb and the XL is spot on. Nice weight to it — light but doesn't feel cheap. The little hidden halloween details you spot up close is a nice touch, always a conversation starter. Gift for my dad — he was thrilled with it.

My new favorite

Bought it for a summer BBQ and it was a hit.

Perfect for summer

Honestly looks more expensive than it is. True to size, got the XL for my 5'8 frame and it's just right. Lightweight and breathable, didn't feel hot at all.

This means a lot, Grant — thank you! Hope to see you back for another print soon. — Oceumi Support Team

Really nice shirt

Honestly looks more expensive than it is. Ordered my usual XL and it fits perfectly. This is my second one from Oceumi, will keep buying. Took off a star because it was a little wrinkled out of the package, but a quick steam fixed it.

Thanks, Vanessa! You're right that it can arrive with a few creases from packing — a quick steam sorts it out, glad it came up great. — Team Oceumi

My new favorite

The detail on this is impressive, so much going on in the pattern. Runs true to size, the L has a nice easy drape. Breathable fabric, comfortable even in the heat. The best part is the little hidden Halloween details you spot up close, such a cool detail.

Really appreciate this, Lauren! Enjoy it, and thanks for choosing Oceumi. — Team Oceumi

Good buy

Honestly looks more expensive than it is. Relaxed fit but not baggy, the 2XL works great for me at 5'10 210lb. Lightweight and breathable, didn't feel hot at all. Runs a touch roomy so if you're between sizes maybe size down.

Appreciate the sizing tip, Wesley! It's a relaxed cut, so sizing down between sizes is solid advice — thanks for sharing. — Team Oceumi

Perfect for summer

Wore it to the office costume party and got a ton of compliments. Love that the tiny bat motifs hidden in the pattern — people don't notice until they get close.

Love it

The pattern is gorgeous, way better than the mockups online. Runs true to size, the L has a nice easy drape. Really comfortable, the fabric moves well. The hidden '2027' woven into the print is a nice touch, always a conversation starter. Got it for my husband and now I'm ordering a second one.

Better than expected

Colors are rich and sharp — the deep crimson and black really pops. Sizing was accurate, XL fit like I expected.

Beautiful print

The print quality is excellent, the pumpkin orange and brown mix looks even better in person. Fits true to size — I'm 5'8 200lb and the 2XL is spot on. Love that the little hidden Halloween details you spot up close — people don't notice until they get close.

Worth it

Bought it for a fall event and it was a hit. Lightweight and breathable, didn't feel hot at all.

Almost perfect

Everyone at a cabin weekend asked where I got it. Relaxed fit but not baggy, the XL works great for me at 5'10 200lb. Material is light and airy, great for warm weather. Love that the hidden stag you only see on a second look — people don't notice until they get close. Color is very slightly deeper than the website photo, still great though.

Thanks for the note, Daniel! Screens can shift the shade a touch — glad the crimson & black stag print still landed well in person. — Oceumi Support Team

Impressed

The detail on this is impressive, so much going on in the pattern. Fits true to size — I'm 6'1 155lb and the L is spot on. Nice weight to it — light but doesn't feel cheap. Third shirt from them, quality is consistent.

Nice print, small note

Wore it to a neighborhood party and got a ton of compliments. Relaxed fit but not baggy, the XL works great for me at 6'1 195lb. Soft feel and it stays cool, perfect for summer. Took off a star because it was a little wrinkled out of the package, but a quick steam fixed it.

Thanks, Trevor! You're right that it can arrive with a few creases from packing — a quick steam sorts it out, glad it came up great. — Oceumi

Good buy

The detail on this is impressive, so much going on in the pattern. Breathable fabric, comfortable even in the heat. Relaxed fit but not baggy, the M works great for me at 5'8 180lb. Color is very slightly deeper than the website photo, still great though.

Thanks for the note, Devin! Screens can shift the shade a touch — glad the hidden-bat print still landed well in person. — Oceumi

Great shirt

The pattern is gorgeous, way better than the mockups online. True to size, got the L for my 5'11 frame and it's just right. The hidden '2027' woven into the print is a nice touch, always a conversation starter. Got it for my husband and now I'm ordering a second one.

Thank you so much, Kevin! So glad the amber & gold print lived up to it in person — enjoy wearing it! — Team Oceumi

Almost perfect

The pattern is gorgeous, way better than the mockups online. Love that the little hidden Halloween details you spot up close — people don't notice until they get close. Shipping took a little while but the tracking kept me updated. Fits true to size — I'm 5'7 165lb and the L is spot on. Material is light and airy, great for warm weather. Shipping was slower than I'd like, but the shirt itself is great.

Thanks for your patience, Curtis! We're working on faster transit — really glad the shirt was worth the wait. — Team Oceumi

Highly recommend

The pattern is gorgeous, way better than the mockups online. Relaxed fit but not baggy, the L works great for me at 6'2 210lb. The tiny bat motifs hidden in the pattern is a nice touch, always a conversation starter.

Thank you so much, Tyler! So glad the hidden-bat print lived up to it in person — enjoy wearing it! — Oceumi

Great shirt

Got so many compliments wearing this to a neighborhood party. Love that the little hidden Halloween details you spot up close — people don't notice until they get close. True to size, got the M for my 6'0 frame and it's just right. Material is light and airy, great for warm weather.

Nailed it

Wore it to a holiday party and got a ton of compliments. Love that the hidden '2027' woven into the print — people don't notice until they get close. True to size, got the L for my 5'9 frame and it's just right. Delivery was on time and it came neatly folded.

Better than expected

The detail on this is impressive, so much going on in the pattern. True to size, got the L for my 5'11 frame and it's just right. Took a couple weeks to arrive but worth the wait.

Thank you so much, Greg! So glad the crimson & black stag print lived up to it in person — enjoy wearing it! — Oceumi Support Team

Exactly what I wanted

Perfect for a NYE dinner — I felt great in it. Relaxed fit but not baggy, the L works great for me at 5'11 190lb. Soft feel and it stays cool, perfect for summer. The hidden '2027' woven into the print is a nice touch, always a conversation starter. Shipping took a little while but the tracking kept me updated.

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