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Getting Started

  • You don’t have to remove the cooling packs from the vest to charge them. Put the whole vest with packs included into the freezer or fridge for 45 to 60 minutes (or ice water for 20 minutes) until they are fully solid again.
  • If you took the packs out of the vest, slide the frozen cooling packs into each of the pockets in the back of your ThermApparel UnderCool Cooling Vest.
  • Your UnderCool is now charged and ready to be worn.
    TIPS: 
  • Cooling packs can be stacked but will take longer to freeze. 
  • Make sure the cooling packs lay flat or they will freeze into strange shapes
  • If cooling packs freeze in strange shapes run warm water over them until they are squishy. Reshape. Lay flat. Refreeze.

How to Wear

  • Unfasten the Velcro.
  • Place your arms through each arm hole.
  • Fasten the Velcro on your front, tight enough so the cooling packs rest firmly on your back.
  • Wear whatever you like over your UnderCool and enjoy a day safe from the heat. 

How to Tell if You Have the Right Fit

  • Your ThermApparel UnderCool Cooling Vest should fit your body like a glove with no space between your back and the cooling packs. 
  • Watch our sizing video for tips on getting the right fit.
  • Think you have the wrong size and want to exchange? Start at Exchanges and Returns.

Cooling and Recharging

  • Your ThermApparel UnderCool Cooling Vest will cool as long as the packs haven't phased to complete liquid - this may occur in 1-3 hours depending on your level of activity and the ambient temperature.
  • To recharge the packs, put them back in the freezer or fridge for 45 to 60 minutes (or ice water for 20) until they are fully solid again.
  • Cooling packs can be stacked but will take longer to freeze. 
  • Make sure the cooling packs lay flat or they will freeze into strange shapes
  • If cooling packs freeze in strange shapes run warm water over them until they are squishy. Reshape. Lay flat. Refreeze.

Washing and Care of Garment - Machine Wash

  • Remove all cooling packs from the vest. (They will be destroyed if you keep them in there! Trust us, we tried it and it's not pretty.)
  • Secure the velcro so it won't snag and place in a small net laundry bag.
  • Wash UnderCool in cold water with like colors.
  • Lay flat to air dry and store flat. (if it goes into the dryer don't panic, you haven't destroyed your vest garment. The dryer just shortens the life of the spandex.)

Washing and Care of Garment - Hand Wash

  • Cooling Packs can stay in the vest garment. 
  • Hand wash with mild soap.
  • Rinse well.
  • Lay flat on towel to air dry.

Washing, Care and Storage of Cooling Packs

  • Do not leave cooling packs in a hot car or hot environment.
  • To get the most out of your cooling packs, keep them frozen when not in use.  This can be done by leaving them in the freezer, fridge, or anywhere colder than 70F/21C. (The cooling packs can hang out in the fridge or freezer for years. It's ok.) 
  • Cooling packs will last for 2-3 years depending on usage.
  • Cooling Packs left in their melted state for extended periods of time will reduce their lifespan.
  • To wash your cooling packs, use warm soapy water in the sink.  DO NOT put cooling packs in your washer, dryer, or dishwasher. (They will be destroyed! Trust us, we tried it and it's not pretty.)
  • For discounts on replacement packs, check out our Recycling Program.

Cautions

  • Consult your health care professional prior to using this or any body cooling product for a medical condition.
  • ThermApparel Cooling Packs are designed for the specific objective of cooling the body.
  • ThermApparel LLC will not be liable for injuries or damages resulting from misuse or misapplication of our products.
  • Use only as directed.
  • Keep the cooling packs away from children and pets.
  • Do not puncture, microwave or eat the cooling packs.
  • The vest and cooling packs are not fire retardant. Melting point is above 375 ˚F / 190 ˚C. No SARA Hazards.
  • Substance is oil based, bio-degradable and non-toxic.
  • Use at your own risk.

Warranty

1 year warranty against any defects in materials and/or workmanship. We will repair or replace, at ThermApparel’s discretion, within that time. Check warranty by state and country.

Returns and Damages Policy

If for any reason you find a product unsatisfactory, you may return the product in its unused, original condition, within 60 days of purchase date as stated on your receipt for a full refund of the amount paid, minus shipping.

Please contact us if your product is received damaged or defective and we will make it right! If your product is received damaged in shipping, document damage with photos, keep all packing materials and report the damage to customer service at 855-232-7233 or contact.us@thermapparel.com. We will replace your product right away. For the full policy please visit thermapparel.com

Questions? Comments?

855-232-7233
contact.us@thermapparel.com

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.