White UnderCool


White UnderCool


*All prices listed in USD
**International orders: your country’s taxes and duties are NOT included in the price or shipping

Our basic package: our signature UnderCool vest with 1 set of cooling packs!

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Do you need cooling relief for a quick outing? This package is the deal for you!

This package includes:

  • 1 UnderCool vest

  • 1 set of cooling packs

UnderCool features:

  • Adjustable straps and a velcro front for the best fit and comfort

  • Wicking fabrics and built-in mesh panels to keep you dry and comfortable

  • 4 pockets along back

  • Cooling relief for up to 1.5 hours*

  • 30-day money back guaranteed

Please review our sizing chart below to ensure the best fit for your UnderCool:

*Please go to our Youth & Petite page if you wish to purchase an XXS

Size Waist
Extra Extra Small 21" - 25" 53 cm - 63 cm
Extra Small 24" - 28" 61 cm - 71 cm
Small 28" - 32" 71 cm - 81 cm
Medium 34" - 38" 86 cm - 97 cm
Large 40" - 46" 102 cm - 116 cm
Extra Large 48" - 52" 121 cm - 132 cm

*Waist Measurement: If you bend to the side, you will crease in the middle of your body; this is your natural waist. That's where you want to take your waist measurement.

*Womens Sizing Guide:  Please note sizing is dependent on waist size not bust size.

*Sizing Guide: ThermApparel recommends ordering a size smaller than your usual T-shirt size. (If wear a large T-shirt, a Medium UnderCool will fit best.)

Other Resources:

Please review our Return and Exchange Policy here and our Warranty Policy here.

Disclaimer: 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.

*Cooling times may vary depending on conditions and activities.