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CoolSleeve features:
  • Lightweight (similar to a smartwatch)
  • Concealable under clothing
  • 45-60 minutes of Coolings
  • 60 day money back guarantee
Garment Facts:
  • 4-way stretch for best fit and comfort
  • Wicking fabrics to keep you dry
  • 75% Nylon / 14% Latex / 11% Spandex
  • Machine washable, lie flat to dry
Cooling Pack Facts:
  • CoolSleeve66 packs freezes at 66F (19C) so its safe for contact with the skin. These are slightly colder than our normal packs to provide more cooling power to the limited surface area.
  • Each Cooling Pack measure 7" x 2.5"
  • Works great in dry and humid conditions
  • ThermApparel bio-based PCM is non-toxic and biodegradable
  • Fast recharge times (30 min icewater, 45 min freezer, 60 min fridge)
This package includes:
  • 2 CoolSleeves with 2 CoolSleeve66 Cooling Packs


    CoolSleeves are one size fits most.  Please let us know if your purchase is too big or too small.  We may add additional sizes in the future.

Cooling Pack Care and Storage Recommendations:
  • When not in use, store Cooling Packs in the solid state, this means the fridge, freezer, or a room less than 66F/19C
  • Cooling packs left in their melted state for extended periods of time may reduce the lifespan of the cooling packs.
  • When handled properly packs should last 2-3 years and can be refrozen thousands of times.
  • To wash your cooling packs, use warm soapy water in the sink.  Do not put them in the washer, dryer, or dishwasher.
  • Please review our Return and Exchange Policy, Warranty Policy and User Guide.
Consult your doctor or health care professional prior to using this or any cooling products for a medical condition.  ThermApparel LLC will not be liable for injuries or damages resulting from the misuse or misapplication of our products.


Questions about our vests or shipping? Reach out to the ThermApparel team toll-free at 855-232-7233, write to us through our website’s contact form or chat with us via live chat. We always respond because, otherwise, that wouldn't be cool.