The UnderCool

UnderCool cooling vest with 1 set of cooling packs
UnderCool cooling vest with 1 set of cooling packs

The UnderCool


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
    • 30-day money back guaranteed

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

    Size Waist Length
    Extra Small 24" - 28" 61 cm - 71 cm 15" 38 cm
    Small 26" - 30" 66 cm - 76 cm 16" 41 cm
    Medium 28" - 32" 71 cm - 81 cm 17" 43 cm
    Large 32" - 38" 81 cm - 96 cm 19" 48 cm
    Extra Large 40" - 45" 101 cm - 114 cm 19" 48 cm

    *Quick Reference 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.