Adventure Bundle

2 UnderCools with 4 sets of cooling packs
UnderCool cooling vest.
UnderCool cooling vest weighs less than 2 pounds!
UnderCool cooling vest features stretchy, breathable and wicking fabric.
UnderCool cooling vest fits any size.
UnderCool cooling vest features adjustable straps.
UnderCool cooling vest features Velcro fastening.
Cooling packs are non-toxic, biodegradable, and safe on skin!
Cooling packs slide into pockets on UnderCool cooling vest and cool for up to 2 hours!
UnderCool cooling vest is so slim it's practically invisible!
2 UnderCools with 4 sets of cooling packs
UnderCool cooling vest.
UnderCool cooling vest weighs less than 2 pounds!
UnderCool cooling vest features stretchy, breathable and wicking fabric.
UnderCool cooling vest fits any size.
UnderCool cooling vest features adjustable straps.
UnderCool cooling vest features Velcro fastening.
Cooling packs are non-toxic, biodegradable, and safe on skin!
Cooling packs slide into pockets on UnderCool cooling vest and cool for up to 2 hours!
UnderCool cooling vest is so slim it's practically invisible!

Adventure Bundle

498.99

Find long term relief with of our 2 signature UnderCool vests and 4 sets of cooling packs!

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Our Adventure package provides long-term cooling relief wherever you go!

This package includes:

  • 2 UnderCool vests
  • 4 sets 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
  • Cooling pack 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:

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.

*Cooling times may vary depending on conditions and activities.