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!

    Add To Cart

    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 Circumference Height
    Extra Small Up to 28" Up to 5'4"
    Small Up to 32" Up tp 5'7"
    Medium Up to 38" Up to 6'
    Large Up to 44" Up to 6'5"
    Extra Large Up to 52" Up to 6'5"

    *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.