THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&
THERMAL FLEX LONG SLEEVE (MEN&

THERMAL FLEX LONG SLEEVE (MEN'S)

4.5
Rated 4.5 out of 5 stars
6 Reviews
Regular price$149.99
/
Color
Size
Free
Shipping
$150+
Australia Made
Money Back Guarantee

Sharkskin Thermal Flex reinvents swimming and water sports! NEW FOR 2026

Take your water performance to the next level with Sharkskin Thermal Flex, the most advanced UPF50+ long-sleeve top engineered for swimmers, surfers, paddlers, and all watersports enthusiasts.  

Built with cutting-edge Hydrophobic Nanotech Compression fabric and incorporating Far Infrared (FIR) technology, this top is designed to keep you warm and comfortable without the extra bulk and buoyancy of neoprene and to repel water while minimizing absorption so you can swim faster. 

Whether you are pushing through the toughest swims, surfing or bodysurfing the waves at the beach, or paddling for hours, Thermal-Flex keeps you warmer without restriction so you can perform at your peak and stay comfortable longer in, on and under the water.  

Push Your Limits. Stay Warm. Go Faster. Reinvent Your Watersports Experience with Sharkskin Thermal Flex

We offer free shipping on all orders totaling $200 or more. Your order will be processed and shipped from our Maine warehouse within 3 business days. Depending on your location, you can expect to receive your order within 4-8 business days.

If you need your SHARKSKIN faster than this, please pick expedited shipping. Expedited orders ship same day if received by 2pm Eastern Mon-Fri.

We have a 30-day return policy, which means you have 30 days after your order ships to return your item to us.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.

You can always contact us for any return question at info@sharkskinusa.com.

4.5
Rated 4.5 out of 5 stars
Based on 6 reviews
Total 5 star reviews: 4 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
83%would recommend this product
Slide 1 selected
6 reviews
  • MN
    Mark N.
    Verified Buyer
    Rated 3 out of 5 stars
    4 hours ago
    🏊‍♂️

    I’ve only used this thermal swim top once so far, during a 3 km ocean swim. I was impressed with the thermal performance—it definitely kept me warmer in the water.

    For the first half of the swim it was very comfortable, but during the second half I started to notice chafing under my arms and around my neck. By the end of the swim the irritation was quite noticeable.

    Once the chafing has settled down, I’ll give it another try using an anti-chafe cream on those areas to see if that resolves the issue, as I’d really like to keep using it. If you have a particular anti-chafe cream or product that you recommend for use with this swim top, I’d appreciate your advice.

    Based on my first swim, the thermal performance is excellent, but the chafing was disappointing.

    Activity Swimming
    Sharkskin USA
    3 minutes ago

    Hi, sorry to hear about your experience. It is difficult to get a 100% perfect fit for all body shapes - but luckily there is an anti-chafe balm called Body Glide that has been a supplier to swimmers (for rash tops and / or wetsuits), triathletes runners, cyclists, hikers, etc for many years. Most sports stores including Rebel Sport stock Body Glide. Hope that this helps and thanks for your review and feedback, Sharkskin Team.

  • MK
    Mary-Lou K.
    Verified Buyer
    Rated 5 out of 5 stars
    1 month ago
    Thermal Long Sleeve

    I bought this for swimming and I am really impressed. It keeps me warm and doesn't interfere with swimming. I swim 3ks a day and it has made a huge difference.

    Activity Swimming
  • IM
    Ian M.
    Verified Buyer
    Rated 4 out of 5 stars
    1 month ago
    thermal flex

    Warm and comfortable to swim in.

    Sizing a bit tricky. Would like to try size up in the water to compare but maybe next time.

    Activity Swimming
  • WG
    William G.
    Verified Buyer
    Rated 5 out of 5 stars
    2 months ago
    Chilly-me

    I must be getting older because I feel the chill of morning pool swims more each year. This long sleeve is just enough to make temps tolerable. The body fit is snug but long limbs means it rides up in sleeves & waist. Notwithstanding, it's comfortable in the water, has virtually no drag & keeps my core temp comfortable. I'm happy.

    Activity Swimming
  • IA
    Ian A.
    Verified Buyer
    Rated 5 out of 5 stars
    3 months ago
    Thermal flex long sleeve

    The thermal flex long sleeve has been my constant companion in the Unley Swimming Centre since it arrived. With the mornings decidedly cooler and the water correspondingly so, this garment has proved a welcome addition to my swimming outfit……it definitely keeps me warmer and does not rub, nor does it “drag” and slow me down when wet. Love it!

    Activity Swimming


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