O'Neill Women's Thermo-X Long Sleeve Insulating Rashguard

4.5

Rated 4.5 out of 5 stars

171

$71.95

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SKU: 5025 | Product Code: 8161304

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Layer up for the coldest waves in the O'Neill Women's Thermo-X Long Sleeve UPF 50+ Thermal Rashguard. Featuring Thermo-X Hyperdry fabric that provides maximum...

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4.5

Rated 4.5 out of 5 stars

Based on 171 reviews

Total 5 star reviews: 123 Total 4 star reviews: 27 Total 3 star reviews: 12 Total 2 star reviews: 4 Total 1 star reviews: 5

88%would recommend these products

Fit/SizingRated -0.4 on a scale of minus 2 to 2

Customers say

Customers say this thermal rashguard is a game-changer for cold water swimming. It provides excellent warmth and comfort, allowing users to extend their swim time in chilly conditions. The soft, fuzzy interior is praised for its coziness. While the snug fit is appreciated for its insulating properties, many advise sizing up as it runs small. Users love its versatility for various water activities, from lap swimming to snorkeling. The quick-drying fabric and ease of movement are highlighted positives. Some find it challenging to remove when wet, but overall, it's highly recommended for its effectiveness in maintaining body heat in cold water.

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171 reviews

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PB
Peggy B.
Verified Buyer
Reviewing
O'Neill Women's Thermo-X Long Sleeve Insulating Rashguard
I recommend this product
Primary Activity Uses Swimming
Body Type Athletic
Rated 5 out of 5 stars
3/3/26
Awesome product
I’m a swim instructor. I use this shirt both indoor and outdoor. It’s very warm !!
Fit/SizingRated 0.0 on a scale of minus 2 to 2
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S
SwimOutlet
3/4/26
Great to hear it keeps you warm for all your swim instruction needs!
LG
Laura G.
Verified Buyer
Reviewing
O'Neill Women's Thermo-X Long Sleeve Insulating Rashguard
I recommend this product
Primary Activity Uses Water Aerobics, Other
Body Type Slim
Rated 5 out of 5 stars
3/3/26
So warm
I use this for water volleyball and I like it better than my neoprene wetsuits. I also intend to use it as a base layer for cold weather.
Fit/SizingRated -1.0 on a scale of minus 2 to 2
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S
SwimOutlet
3/3/26
Love that it works for both water volleyball and cold weather layering! So versatile.
LC
Lisa C.
Verified Buyer
Reviewing
O'Neill Women's Thermo-X Long Sleeve Insulating Rashguard
I recommend this product
Primary Activity Uses Swimming
Rated 5 out of 5 stars
1/2/26
So warm!
I love how warm it keeps me in the winter, even after swimming when I'm wet.
Fit/SizingRated 0.0 on a scale of minus 2 to 2
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S
SwimOutlet
1/2/26
Perfect for winter swims! So happy it keeps you cozy even when wet.
SS
Sandy S.
Verified Buyer
Reviewing
O'Neill Women's Thermo-X Long Sleeve Insulating Rashguard
I recommend this product
Primary Activity Uses Water Aerobics
Rated 5 out of 5 stars
12/18/25
Thermo shirt
It is very comfortable and keeps you warm and drys fast
Fit/SizingRated 0.0 on a scale of minus 2 to 2
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S
SwimOutlet
12/18/25
Awesome! So glad it keeps you cozy and dries quickly Sandy!
TL
Tracy L. B.
Verified Buyer
Reviewing
O'Neill Women's Thermo-X Long Sleeve Insulating Rashguard
I recommend this product
Primary Activity Uses Water Aerobics
Body Type Athletic
Rated 5 out of 5 stars
12/2/25
Warmth for water volleyball
Perfect weight and warmth for all day pool play in cooler weather
Fit/SizingRated 0.0 on a scale of minus 2 to 2
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