O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard
O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard
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4.5(28)Rated 4.5 out of 5 stars

O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard

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    Product Details

    SKU: 5021 | Product Code: 8161302
    |
    Block out the cold in the O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard. Featuring a layered fabric construction that provides insulation with low bulk...
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    Reviews & Questions

    4.5
    Rated 4.5 out of 5 stars
    Based on 28 reviews
    93%would recommend these products
    Fit/SizingRated 0.1 on a scale of minus 2 to 2
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    28 reviews
    • RW
      Richard W.
      Verified Buyer
      Reviewing
      O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard
      I recommend this product
      Product Standouts Quality
      Rated 5 out of 5 stars
      6/2/26
      Great product!

      The insulating material works very well. It keeps me warm when I'm in the colder water conditions.

      Fit/SizingRated 0.0 on a scale of minus 2 to 2
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      S Profile picture for SwimOutlet
      SwimOutlet
      6/2/26

      Thank you Richard! So glad the Thermo-X is keeping you warm in cold water. Enjoy your adventures!

    • DM Profile picture for David M.
      David M.
      Verified Buyer
      Reviewing
      O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard
      I recommend this product
      Body Type Tall
      Product Standouts Quality, Performance/Durability, Fit, Design
      Rated 5 out of 5 stars
      2/27/26
      Great top

      I love this rash guard, it is thick enough to keep me warm when wet. It makes stepping into the breezy hall leading to the locker room way less chilling. Fits great and looks good.

      Fit/SizingRated 0.0 on a scale of minus 2 to 2
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      S Profile picture for SwimOutlet
      SwimOutlet
      2/27/26

      Awesome! So glad you're staying warm and looking good in it, David!

    • GP
      Gregory P. M.
      Verified Buyer
      Reviewing
      O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard
      I recommend this product
      Product Standouts Quality, Fit
      Rated 5 out of 5 stars
      2/25/26
      It's what I expected.

      Tried it on. Fit nicely. Will test in the water this coming weekend. I expect it will perform to expectations.

      Fit/SizingRated 0.0 on a scale of minus 2 to 2
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      S Profile picture for SwimOutlet
      SwimOutlet
      2/25/26

      Great to hear it fits perfectly, Gregory! Hope you have an awesome time testing it out this weekend.

    • JF
      John F.
      Reviewing
      O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard
      I recommend this product
      Body Type Athletic
      Product Standouts Performance/Durability, Quality, Fit
      Rated 5 out of 5 stars
      10/20/24
      Helps with the cold water

      I've been wearing one for the past year in some pretty chilly water through the past winter and cold days now. I works pretty well in the chilly water.

      Fit/SizingRated 0.0 on a scale of minus 2 to 2
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    • WB
      William B.
      Verified Buyer
      Reviewing
      O'Neill Men's Thermo-X Short Sleeve Insulating Rashguard Black
      I recommend this product
      Body Type Tall
      Product Standouts Quality, Fit, Design
      Rated 5 out of 5 stars
      8/12/24
      O’Neil thermal rashguard

      Good product

      Fit/SizingRated 0.0 on a scale of minus 2 to 2
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