The bottom line Mission cooling hats are incredibly effective at regulating my body temperature when I'm outside on hot days. They keep me cool and comfortable, and I recommend them to anyone who spends a good bit of time outside.

Built to be rugged and tough like you, the Mission hydroactive cooling bucket hat features chemical-free proprietary fabric inside the hat that cools instantly when soaked with water or sweat, wrung out and snapped in the air.

MISSION Cooling Neck Gaiter This all-weather neck gaiter has advanced cooling and comfort technology, allowing you to stay active longer even when the heat rises.

They don't really care about their hair or anything. Or. You can just get this little inner band wet. You can wet it or sweat it with the hats.

Usually, patients wear the cap for 30 minutes before their chemotherapy treatments, throughout the chemotherapy session and for 90 to 120 minutes afterward. A study conducted on women using the cooling caps while undergoing chemotherapy for breast cancer showed that 66% lost 50% or less of their hair.

Activate quickly in 3 easy steps: Wet it, Wring it, and Wave it. This cooling boonie hat stays cool for up to 2 hours!

Mat Steinmetz, the founder of 51-Speedshop.com and a coach who has worked with top-level names such as three-time Kona champ Craig Alexander on his heat management, suggests a visor in most cases, as fabric typically interferes with the evaporative effect of sweating.

MACHINE WASH COLD WITH LIKE COLORS. TUMBLE DRY LOW. DO NOT BLEACH. DO NOT USE SOFTENERS.

Water. This will help activate. The technology. But also we'll make sure the towel won't soak your skin or clothes when you use it. Finally.

Most people can tolerate scalp cooling. About 30% to 50% of the time, people have side effects such as headaches, nausea (feeling like you're going to throw up), scalp pain, or feeling chilly. Some people also find the caps uncomfortably cold.

Drowsiness, dizziness, blurred vision, upset stomach, nausea, nervousness, or dry mouth/nose/throat may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Videos by Outdoors

• Here are the best evaporative cooling hats you can buy right now.
• The Mission Hydroactive Max Performance Hat.
• Mission Cooling Bucket Hat.
• Frogg Toggs Chilly Bean Hat.
• Ergodyne Cooling Neck Wrap.
• Eutuxia Cooling Scarf.