how long do you have to soak it?

No need to soak, just wet it thoroughly under the faucet.

Are there different sizes or one size?

One size but they fit everyone from our football team to the coaches. Really work well, just don't dry in dry or use fabric softener. Seems that breaks down the material.

What's the difference between this and the VaporActive model? I would be using it under a motorcycle helmet.

Hello, Our new Mission VaporActive Cooling Skull Cap has an exposed elastic allowing more stretch for a better fit. More importantly it’s a different technology. Vaporactive is our hyper-evaporating technology and our Mission Enduracool (HydroActive) Cooling Helmet Liner is our wet-to cool technology (HydroActive).Please don't hesitate to contact us with any further questions.Thank you,

It says wring it out. Does that mean completely or leave a little cold water in it?

Depends on what you feel like. I use mine mostly dry under a bicycle helmet to block the sun, but when it's really hot outside I wet it. If it's not rung out some, water runs down out of the cap, which isn't bad when HOT. Or ring out enough so it doesn't, you'll learn what you like/need. I have several now, even one with a flap at the back to protect my neck from the sun when mowing. Wish I had these years ago! I like the white best, but they show the dirt fast.

Mission Cooling Helmet Liner Skull Cap Cools When Wet Liner

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

❄️ Stay Cool, Stay Ahead — The Ultimate Performance Skull Cap

ALL SEASON VERSATILITY - Perfect for running, cycling, football, or hardhat work—performance gear that adapts.
SUN SAFE SWEAT SMART - UPF 50 blocks harmful rays while wicking moisture to keep you dry and protected.
INSTANT CHILL INSTANT EDGE - Activates in under 1 minute to drop temp by 30°F—stay cool when it counts.
FEATHERLIGHT FIT HELMET READY - Designed to fit snugly under helmets without slipping or sweat distractions.
CHEMICAL FREE LONG LASTING COOL - HydroActive tech never washes out; reusable and machine washable for endless use.

The Mission Cooling Skull Cap uses proprietary HydroActive Cooling Technology to lower fabric temperature by up to 30°F within a minute of activation. Lightweight and ventilated, it fits comfortably under helmets and hard hats, making it ideal for athletes and professionals alike. Offering UPF 50 sun protection and chemical-free, reusable cooling, this skull cap keeps you cool, dry, and protected during intense activity or long workdays.

Specifications

ASIN	B00UR4HPEI
Age Range Description	All ages
Best Sellers Rank	#107,951 in Fashion ( See Top 100 in Fashion ) #223 in Men's Skullies & Beanies
Brand Name	MISSION
Color	Digital Camo Gray
Customer Reviews	4.4 out of 5 stars 9,412 Reviews
Fabric Type	Polyester/Spandex
Global Trade Identification Number	00812424016945
Import Designation	Imported
Included Components	Mission Cooling Helmet Liner- Digital Camo Grey
Item Dimensions	26.7 x 26.7 x 10.2 centimeters
Item Type Name	Mission Cooling Helmet Liner
Item Weight	9 g
Manufacturer	Mission Athlete Care
Manufacturer Part Number	103908
Material Type	Polyester Spandex
Number of Items	1
Occasion Type	cooling skull caps for men, hard hat cooling liner, headbands for men, helmet liner, yankees hat
Pattern	Digital Camo Gray
Product Care Instructions	Machine Wash
Seasons	Fall, Spring, Summer, Winter
Size	One Size
Style Name	Beanie
Style Number	103908
Target Audience	Unisex-Adults
UPC	812424016945
Ultraviolet Protection Factor	UPF 45
Unit Count	1 Count

Reviews

J**E

Works fine.

Works fine. Fits my 8 yr olds head good. He wears it under his football helmet.

24.08.2015

い**ん

最高

これはいいよ

17.07.2026

G**O

Calottina sotto casco

E' leggerissima.Non ci si accorge di indossarla.Tiene veramente fresco. La consiglio come sotto casco ma anche per chi lavora sotto il sole.

11.08.2017

S**N

Feels cool when sweating

Works. Feels cool when sweating,

13.06.2018

A**A

Nice product

Great idea and it certainly makes a difference on a hot day

15.09.2016

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