Shopping Cart [Cooling Gear
for every adventure
reduce fatigue by boosting your body’s cooling in any climate
UnderCool 3
most concealable
RallyWrap
easy on/off
UltraCool
max cooling
Free Shipping
Easy Exchanges/Returns
60 day exchange/return
Made in the USA
Awesome Customer Service Yes, we really do answer
Tired of feeling hot and uncomfortable?
Heat sneaks up on you, silently adding stress to your body, use ThermApparel Cooling Gear to...
- reduce fatigue
- improve performance and endurance
- maintain cognitive focus
- minimize risk of heat-related injury
Stay cool anywhere.
Works great in humid and dry climates
Cooling that lasts.
Cooling packs last 1-4 hours depending on product.
Stay energized.
Lightweight cooling power that won’t drag you down
Feel great.
4-way stretch comfortably fits all bodies and moves freely with you
Stay in the game.
Ultrafast recharge times and 1000 reuse’s mean you’ll always have cooling
Easy to use
Easy to use
Cool It
place in the fridge, freezer or ice water
Wear It
insert cooling packs into the pockets
And Go...
anywhere you want, doing anything you want
Experience the magic of PCM cooling
Meticulously designed PCM cooling packs provide continuous cooling comfort by absorbing body heat and complementing your body’s natural cooling process, effectively lowering your core body temperature.
ThermApparel PCM cooling packs fit discreetly into our products pockets, providing hassle-free cooling without the need for soaking or plumping.
Where cooling meets comfort.
Where cooling meets comfort.
4-Way Stretch Fabric adapts to your body's contours and movements for a tailored fit and ultimate flexibility.
Perfect for yoga, running, climbing, or keeping up with the kids, it retains its shape and elasticity over time, ensuring lasting comfort and performance.
Want to take a deep dive into our tech? Check out our How it Works section.
Why we’re better
thermapparel
pcm cooling system
works in any climate- cools your core body temp
- lightweight and flexible
- dry conformal cooling
OTHERS
evaporative cooling
doesn't work in humidity- cools your skin, NOT your core directly
- lightweight and flexible
- must be wet
OTHER
gel & ice cooling
- work in any climate
- too cold for direct skin contact
- heavy and rigid
- wet from condensation
UltraCool
Maximum cooling that wraps all the way around your body in a form factor that mimics the UnderCool.
RallyWrap
Versatile cooling power to use as a belt, seat cushion, or sash. Great for Pre- and Post- Cooling.
UnderCool 3
The cooling vest that started it all. Concealable, lightweigh and comfortable coolling for everyday needs.
FAQ’s
To find your perfect fit, simply measure your natural waist—right where you bend naturally. Picture the 'I am a little teapot' song: where you 'tip me over and pour me out'—that's the spot! Need more guidance? Head over to our sizing page, complete with an instructional video!"
Stay cool with our 60-day guarantee: either love it or get your money back! And hey, if you need a swap, we've got you covered—for free! Give us a shout at 1-855-232-7233 from 8:30 am to 4:30 pm EST. It's all about keeping things cool and hassle-free!
Our cooling packs are the champions of convenience! They recharge in record time: just 20 minutes in ice water, 40 minutes in the freezer, or 60 minutes in the fridge. No extra steps needed from you! Want to geek out on the details? Dive into our tech page for more!
Absolutely! Give us a shout at 1-855-232-7233 from 8:30 am to 4:30 pm EST, and watch in amazement as a real human picks up the phone! Prefer to keep it digital? Jump into our live chat for lightning-fast assistance!
Let our happy customers do the talking! Dive into our testimonials and see why they're raving about us!
Megan
New York
"It's been a total game changer in terms of being able to do outdoor events. It helps me keep my core temp down. I’ve worn it kayaking and to run errands because I get really warm and it's amazing."
Bethany Hill
Florida
"Bravo to ThermApparel! I don't think I could have done my yard work, which involves trimming off 8' high sections from my bird of paradise trees without my vest. My Cooling Vest outlasted me and my undeniably strenuous activity as well as the "feels like" 88 degree weather with sunshine.”
Ben Mandrell
Tennessee
"I wear my UnderCool when I work out, It helps me stay in the game. I can run a lot better and get more out of my workouts. It has allowed me to get back part of the life I lost when I had the MS diagnosis. It has definitely allowed me to enjoy my life."
Andrea
Texas
"I have been so stubborn about not wanting a cooling vest, but I should have bought one sooner. They have been life changing. When I'm wearing one, I'm able to participate in activities without debilitating fatigue. Thank you for helping me to feel a little bit more normal again.”
Rose
New York
"My body can't take the heat; walking becomes impossible and who wants to say indoors. Summer time means fun in the sun. Thanks to the UnderCool Cooling Vest I am able to be out and about. I have almost every type of cooling vest out there and none of them are as discreet nor stay as cool as the Thermapparel Cooling Vest.I wear the vest and I can handle a simple workout routine."
Santa Ed Taylor
Oregon
"This vest adds almost nothing to the cookie zone.”
Christine Paternostro
New Jersey
"NOW I CAN enjoy all that Walt Disney World has to offer without worrying about walking or the weather! I am BEYOND happy. It let me enjoy my favorite place with my favorite people and my heat-related MS symptoms were kept at bay.”
Terry Justack
Pennsylvania
"My UnderCool vest has allowed me to golf in warmer weather that would normally be too hot for me to play due to my MS.”
