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Extender Panel

$15.00
$15.00 $15.00
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The ThermApparel Extender Panel is perfect if you’re between vest sizes or want a little extra breathing room.
It attaches to the front panel of your cooling vest with a simple hook‑and‑loop closure, adding up to 2 inches of extra adjustability for a more comfortable, secure fit.
Choose black or white so your extender blends in with your existing ThermApparel gear.
  • Adds up to 2 inches of extra room for your cooling vest
  • Ideal if you’re between sizes or your measurements are changing
  • Attaches to the front panel with hook‑and‑loop for easy on/off
  • Helps keep your vest snug, stable, and comfortable
  • Available in black or white to match your vest
Color: Black
White and Black ThermApparel extender panel on a white background
$15.00
$15.00 $15.00
  • Reduce Fatigue
  • Maintain Cognitive Focus
  • Improve Performance and endurance
  • Minimize risk of heat related Injury
  • Go about your day with no one knowing your wearing it (UnderCool 3 only)
  • Works great in humid and dry conditions
  • Cooling that lasts between x-y hours
  • Feels great
  • Recharges in less than 1 hour
  • Lightweight (UnderCool 3, Headband, CoolSleeve only)
  • Non-Toxic Bio Based
  • NOT ICE
  • Freezes at 70F (21C) so it is safe against skin
  • Works in humid and dry conditions
  • Recharge in 15-60 minutes
  • Won’t condensate so you will stay dry
  • Can be used 1000’s of times for around 3 years
  • Easy to Use gif from home page
  • Freeze times fridge, freezer, icewater
  • Reuse 1000’s of times
  • Washing instructions for garment
  • Cooling pack care

What clients say

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Why We're Better

  • Evaporative Cooling

    • Doesn't work in humidity
    • Cools your skin, NOT your core directly
    • Lightweight & Flexible
    • Must be wet

  • Our PCM Cooling System

    • Works in any climate
    • Cools your core body temp
    • Lightweight & flexible
    • Dry conformal cooling

  • Gel & Ice Cooling

    • Works in any climate
    • Too cold for direct skin contact
    • Heavy & rigid
    • Wet from condensation