Whether you're gearing up for a hike, recovering after a workout, managing heat sensitivity from MS, POTS, lupus, or menopause, or suiting up in a fursuit or costume, the CoolSleeve is your secret weapon for fast, targeted cooling.

Worn on your wrists and forearms, it sits directly over the radial artery, one of the body's most powerful cooling points. Think of it like a heat exchanger: your blood flows through, the CoolSleeve pulls the heat out, and your body circulates that cooled blood back through your entire system, bringing your core temperature down from the inside out and cooling you head to toe.

Use it before activity to pre-cool, during to stay comfortable, and after to speed recovery. Pair it with your ThermApparel cooling vest for head-to-toe cooling that works together to cool your whole body, not just one spot.

• FAST CORE COOL-DOWN: Targets the radial artery at your wrist to pull heat from your blood, cooling you from head to toe.
• PRE-COOL, COOL, RECOVER: Use before activity to get your core temp down, during to stay comfortable, and after for faster recovery.
• DO MORE OF WHAT YOU LOVE: 30 minutes of cooling time per set.
• KEEP COOL NO MATTER WHAT: PCM cooling packs work in both humid and dry heat.
• EASY TO USE: Recharge your CoolSleeve66 cooling packs in ice water in just 15 minutes, the fridge in 45 min. Do not place in the freezer.
• COMFORTABLE FOR ALL BODY SHAPES: 4-way stretch fabric for a flexible, secure fit.
• STAY COOL & DRY: No condensation, no soaking, just clean, dry cooling.

About the CoolSleeve66 Cooling Packs
Each CoolSleeve comes with our CoolSleeve66 cooling packs, a slim 7" x 2.5" PCM pack designed to fit perfectly in the sleeve pocket without bulk. They freeze at 66-70°F (19-21°C), so they're cool and comfortable against your skin, never painfully ice-cold. Do not place in the freezer as this will make the packs too rigid and uncomfortable. Recharge in ice water (15 min) or the fridge (45 min). Learn more about how our cooling packs work in our cooling pack guide.

Q: How does the CoolSleeve work?
The CoolSleeve wraps around your forearm and wrist, placing PCM cooling packs directly over the radial artery. Think of it like a heat exchanger: as blood flows through the artery, the CoolSleeve pulls the heat out of it. Your body then circulates that cooled blood back through your entire system, bringing your core temperature down from the inside out, fast.

Q: When should I use the CoolSleeve?
Before activity to pre-cool your body, during activity to maintain comfort, and after to speed recovery. It's also great as a standalone cooling tool for anyone managing heat sensitivity throughout the day.

Q: Can I use the CoolSleeve with my ThermApparel vest?
Absolutely. Your vest targets your torso and back, while the CoolSleeve targets your wrists and forearms, but together they cool your whole body from head to toe. Every ThermApparel product works with your body's own circulation to bring your core temperature down, so the more you layer them, the more effective your cooling becomes.

Q: Is the CoolSleeve good for fursuiters and costumers?
Fursuiters love the CoolSleeve. Just slip off a paw, swap in a freshly recharged set of packs, and you're back on the floor. The slim profile fits easily under most fursuit sleeves and costume arms, and because the packs recharge so fast, you can keep rotating sets all day without missing a beat.

Q: How long does cooling last, and how do I recharge?
Each set provides about 30 minutes of cooling. Recharge in ice water in just 15 minutes or the fridge in 45 minutes. Do not place in the freezer. For longer sessions, consider having a second set of CoolSleeve packs ready to swap.

Q: Do you ship to my area?
If you order before noon Monday through Friday and items are in stock, your order ships the same day. Free shipping within the USA; worldwide shipping available from Rochester, NY.