Buy More, Save More — Spend $150: 20% Off | $200: 30% Off | $250: 40% Off with Use Code FATHER26 at Checkout

*Exclusions Apply

Boy's Ultimate Rash Guard | Navy Line

Name: Boy's Ultimate Rash Guard | Navy Line
Brand: Coolibar
SKU: 10080-410-151-1002
Price: 45.0 USD
Availability: InStock
Rating: 4.3 (41 reviews)

Aqua Plus^TM Fabric

$45

Color: Navy Line

Navy Line

White

Final Sale - Not eligible for promos or returns

Size: XS

View size guide

Please select a size

Notify Me When Available

Enjoy Free Shipping! Spend $125+ or/and 3+ items to your cart.

Built for long days in the water, the Ultimate Rash Guard offers silky-smooth comfort, quick-dry performance, and dependable UPF 50+ sun protection. Perfect for swimming, surfing, or beach play, it stays put with thoughtful details that keep him comfortable and covered.

Features:

UPF 50+ Sun Protective
Crew neckline
Raglan full length sleeves
Straight hem with gripper elastic at back hem
Zipper pocket at back right
Eyelets at underarms for airflow and water drainage
Inner elastic loop to fasten shirt to shorts
Flatlock seams to prevent chafing
Aqua Plus™ fabric: Water repelling with 4-way stretch, chlorine and saltwater resistant

Measurements

18 ¾" body length (size small)

Style: 10080

Aqua Plus™ Fabric

Built for water-ready performance, Aqua Plus™ fabric is a lightweight woven engineered with a Durable Water Repellent (DWR) finish so that water beads up and rolls off the surface. Subtle 4-way stretch and quick-dry functionality enhance comfort and mobility in and around water. With built-in UPF 50+ sun protection that blocks 98% of UVA and UVB rays, it’s ideal for swim trunks and aquatic adventures. As the world leader in UPF 50+ clothing, we offer high-performance apparel that combines trusted sun protection with innovative design.

Composition: 84% Polyester, 16% Spandex

View Full Fabric & Care Instructions

Shipping

Free Shipping: on orders of $125+ or 3 or more items.
Free 2-Day Shipping: on orders above $250 to the U.S. and Territories.

Delivery in business days (Mon–Fri, excluding holidays).

Returns

Choose the return option that works for you. All eligible returns are completed through our Return Portal.

Smart Return Protection — $2.98 at checkout: faster, worry-free returns with a $0 handling fee on eligible items. Add it at checkout for free returns on unworn items with original tags within 30 days.
Standard Return: available without Smart Return Protection. A handling fee applies:
- Domestic orders: $7.95 return fee
- International orders: $20.00 return fee (plus applicable tax)

Need more details? See our full policies for shipping times, eligibility, and processing.

Certified
UPF 50+

#1 Sun protection
brand worldwide

Breathable

lightweight

All Coolibar products are tested and verified UPF 50+ and recommended by The Skin Cancer Foundation.

Overall rating: 4.3333335 / 5 from 42 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["quality","color","fit","shirt","kids","boys","sun protection","sunburn"].

Review highlights

Reviews

Great Buy for Day at Disney

"My grandson got a really bad sunburn on his family vacation with his dad. I knew I had to take drastic measures for sun protection at Disney just weeks later. Don't know how I found this shirt, but it was fabulous. It's a beautiful color and made out of really nice fabric. The temperatures were scorching hot, but he had not complaints about his long sleeve shirt. Not only did it serve it's purpose, but it was attractive and well-made."

— Sandra M. (5/5)

Fits small and return policy poor

"These was a waste as no point returning. Poor return policy and will no longer buy from coolibar"

— Lorin B. (1/5)

Always the best quality

"Always the best quality"

— Lindy R. (5/5)

LS Rash Guard

"This rash guard has a small zipper pocket and seems to be great quality. My grandson is wearing it now. It looks well made enough for his sister to also wear it in a year or two. Nice job, Coolibar!"

— Andrew B. (5/5)

Love it

"Dries quicky and very high quality. My kids never complained when wearing it."

— Emilia W. (5/5)

Nice shirt

"No sunburns with this on and dries quicky."

— Emilia W. (5/5)

Excellent quality

"Excellent quality"

— Ariane B. (5/5)

Excellent quality

"Excellent quality"

— Ariane B. (5/5)

It's good!

"Grandson, age 9, says, "I like it. It works and is comfortable.""

— Carol H. (5/5)

Will buy again!

"Great quality!"

— Carrie S. (5/5)

Boy's Ultimate Rash Guard | Navy Line

Color: Navy Line

Size: XS

Aqua Plus™ Fabric

Shipping

Returns

Looking Similar

AI Generated Review Summary

Summary topics

Review highlights

Reviews

Great Buy for Day at Disney

Fits small and return policy poor

Always the best quality

LS Rash Guard

Love it

Nice shirt

Excellent quality

Excellent quality

It's good!

Will buy again!

Q&A

UPF 50+ clothing for consistent, all-day sun protection.

Customer Support

Customer Support

UPF 50+ Collection

UPF 50+ Collection

About Coolibar

About Coolibar

Additional Resources

Additional Resources