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Quantity
1
Evaporative cooling material: Enhances natural body cooling for improved comfort in hot conditions
Easy attachment: Designed to fit a wide range of compatible hats for versatile use
Reusable and durable: Built to withstand outdoor activities and repeated use
Lightweight design: Adds minimal weight to hats for unobtrusive wear
Summarized by Shop
Upgrade your Hiker’s Hat by adding the HyperKewl™ Evaporative Insert to it. The cooling material absorbs and slowly releases water through evaporation, supercharging the body’s natural cooling process.
Please, check our Size Chart for a full list of compatible hats.
Compatible Hat Types
Most sun hats, including visors
Material
Evaporative cooling fabric
Installation
Adhesive backing for secure fit
Reusable
Yes
Weight
Lightweight (exact weight not specified)
Summarized by Shop
4.7
17 ratings
5
4
3
2
1
Great idea
Love the insert. Unique
E
Emma · 10 days ago
Cooling insert
Works well in this very hot weather. I tend to wet it and put it in the freezer for best results. The ice melts fairly quickly but you stay cool for longer.
C
Colin · June 25, 2026
Useful little item
Works well in hot weather. Just wet and place in special pocket in hat. Evaporation keeps you cool