The one-size-fits-all adjustable gray cap is easy to activate (and re-activate). Just fill the watertight cap with three ounces of fresh water and distribute it until the inner cooling membrane is saturated. Wearers get up to three days of dry cooling relief that is 15 degrees below ambient air temperature, with a max cooling capacity of 59 degrees Fahrenheit. Durable and machine-washable, the cap even has an anti-microbial treatment to prohibit mold growth.

Features:
Provides immediate and long-lasting cooling for up to three days
Easy to activate
Easy to use, watertight filling cap
Antimicrobial treatment inhibits mold growth
Lightweight and durable
Machine-washable with cap closed

Ergodyne
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