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Arm Coolers™ - Skin Cooler 90*

  • 4000
  • 9

See size chart


We invented the Skin Cooler 90 sleeves to be worn on hot days to keep you cool and protect you from harmful UVB rays.


Here's an awesome Blog written by Tracy De Soto regarding the importance of sun protection. 

Sizing: Please refer to the size chart button on how to achieve the right fit. 
Fit Type:
Fit Note: Please do not assume your size is the same as in previous years, please use our size chart and if in doubt, email us: 

Features and Benefits:
  • Skin Cooler 90™  fabric stretches with you, is soft next-to-skin and breathable.
  • Fabric blocks 90% UVB rays and provides a cooling sensation when wet
  • Softcover elastic on upper arms to keep them in place
  • Reflective logos for increased low-light visibility
  • We are often imitated.  Remember just because it is white, it does not mean the fabric will cool you.  READ ON!

    Want a quick and easy way to put these on?  Click on this Tip from Emilio!

    What makes ours different?  Our Skin Cooler fiber is designed to feel and perform like silk (from a silkworm).  Through Biomimicry, we took the virtues of this natural fiber and created a synthetic silk.  It will keep you cool in hot weather and cooler when it is wet.  Put it on and you will instantly feel the cool sensation.  Wet it and you will notice a drop in the surface temperature of the skin between 7 and 10 degrees.

    A MEDICAL TESTIM0NIAL:  We received this letter from Dermatologist and Mohs Surgeon Dr. Michael Bax.* 

     I am an avid runner and triathlete and I recently discovered your Skin Cooler products, of which I'm a huge fan.  I have been wearing them for a few months now and couldn't be happier.  I am a dermatologist and Mohs surgeon at Roswell Park Cancer Institute in Buffalo, NY.  Every patient I see is plagued by basal cell carcinoma, squamous cell carcinoma, or melanoma.  I recommend your products to my active patients on a daily basis.  It allows them to continue their active lifestyle while protecting themselves from the sun. I find your product to be far superior to all other cooling and sun protective lines.  I truly appreciate your efforts and innovations. 

    Michael Bax, MD 
    Roswell Park Cancer Institute 
    Scott Bieler Clinical Science Center 
    Buffalo, New York

    ***Dr. Bax has no financial investment in De Soto Sport and was not solicited nor compensated in any way for his letter.

    Note: No garment should ever be a substitute so we always recommend you wear sunscreen underneath these, and all, products. It is crucial to keep in mind that a sunscreen's (whichever brand you may choose) SPF/UPF rating refers only to its ability to protect skin from UVB radiation. Because we know that UVA damage can be just as insidious, it is essential for the health of your skin that you use a sunscreen that contains the UVA-protecting ingredients of titanium dioxide or zinc oxide.  


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    Victor M.
    United States

    great on the run too

    Used them during White Lake Half in over 100 degrees on the run and stayed as cool as possible getting them soaked at every aide station. If you are racing in the sun and heat, these are indispensable.

    David C.
    United States

    Arm coolers

    Excellent fit, very good looking and extremely functional. I’d highly recommend these arm coolers.

    David C. verified customer review of Arm Coolers™ - Skin Cooler 90*
    Cecilio P.
    United States

    Good quality

    Overall the quality is very good. The cost in relation to value is good. Excellent customer service. Had an issue where I needed to exchange products. The process was quick and very easy.

    Randy Johnson

    Superior Heat Management

    Dear De Soto Sport, This afternoon I used my new De Soto arm coolers for the first time: Awesome, I love them. Today the weather was a lovely 94, sunny and humid here in Missouri. Your arm coolers kept my skin out of the baking sun allowing me to manage my run more effectively. Sizing (s) is spot on, they fit exactly from wrist to just under my short sleeve garments (tricot, one piece, run shirt). Unlike my other branded arm coolers, De Soto�۪s fit snug to the skin and have zero sag as they become wet: Superior Product. Kind regards, Randy Johnson

    Tony D.

    They Work. Plain and simple.

    It's hard to believe that covering your skin will make it cooler. There's definitely a mental block that you'll have to overcome. But riding with them in the heat will help with that quick enough. Even when they're not wet, there's definitely a cooling effect that's noticeable, whether it's just the decrease in absorption in the skin or some helpful increased movement across the skin, or both. When wet, they work amazingly. As an experiment, I took one off and left one on. I rode first with it dry, and my covered arm was a little cooler. Then I wet it - as well as my uncovered arm - and there was no contest: the arm cooler kept my covered arm far cooler and more comfortable. And my uncovered arm dried off much more quickly, making the arm cooler the clear winner. The only difficultly obviously is keeping them wet while training/racing, especially for someone with heat-induced urticaria that prevents me from sweating as much as I should. But, much better than not having them in this mid-west sweatbox I call home.


    Length - Laying Flat
    Top Opening
    X-Small 15.5" (39.37 cm) 9" (22.86 cm)
    Small 16.5" (41.91 cm) 9.5" (24.13 cm)
    Medium 17.5" (44.45 cm) 11" (27.94 cm)
    Large 18.5" (46.99 cm) 12.5" (31.75cm)
    X-Large 19.5" (49.53 cm)

    14" (35.56 cm)


    The location of where the Arm Cooler length should be measured depends on where you want it to sit but most people like it somewhere on or just above the “ball” that constitutes your bicep when your lift up your elbow so the upper arm is parallel to the ground.  Most important is that you consider how long the sleeve is on the top(s) you plan on wearing. Please see attached photos.

    Also, 98% of people who order tend to fit into the same size Arm Coolers as they would any of our tops.  In order to determine that size, just send me the following:
    CHEST (measured as the largest part of circumference right over the pectoral muscle)
    WAIST (circumference measured at the belly-button line - this is NOT the same as your pants waist size)
    HIPS (circumference measured at the widest point, NOT at your hips where your belt may go. typically this will measure just a few inches below your hips bones and around the largest part of the glutes)
    With these we use an algorithm to create what sort of body type you have in order to determine what size you would be in all our products.
    We look forward to helping you more!


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