Cryo-1Palm Cooling & Warming
4.7 · based on 183 reviewsAccelerate Recovery. Reduce Heat Related Distress.
Cryo-1 is a handheld cooling + warming device designed to help your body regulate temperature and recover faster in real time. It pulls heat out through your palms, your body's natural radiators. Hot flash? Most users feel cooler within 2 minutes. In the gym, it keeps heat from cutting your session short.
Benefits of Cryo-1
A powerhouse of features, small enough for every-day carry.
Control Hot Flashes
Relief when it starts.
Boost Physical Performance
Stay cool between sets. Train harder. Recover faster.
Reduce Heat Stress
Cool down fast. Get back in.
Calm Anxiety
Lower heart rate. Regain control.
How to use
Cool down or Warm up in three minutes.
No apps, no ice. Turn it on, hold it in your palm, and let your body do the rest.
Hold the cold or warm button for 3 seconds. It starts working right away, but it works best once it reaches temperature.
Set it down and let it reach temperature. This takes 1 to 2 minutes. In a warm room it can take a little longer.
Rest your palm on the plate for 1–2 minutes to cool down, or as long as you like to warm up. The blood in your hand cools or warms, then circulates through your whole system. Some people also press it gently against the side of the neck near the carotid artery for faster relief.
A single tap when off shows your remaining battery. When on, tap either button to cycle through the three cool or warm settings. Hold active button for 3 seconds to turn off.
Real stories
Hear from real users
Kristen C.
“Every woman going through perimenopause should have a tool like this.”
Perimenopause
Dana R.
“I keep it in my bag. Ten minutes of sitting there sweating versus two minutes and it's over — that's a big difference to me.”
Perimenopause
Priya S.
“Night sweats used to mean I was awake for an hour. Now it's a couple of minutes and I'm back asleep.”
Night sweats
Susan M.
“When a hot flash hits I hold it for about a minute and the heat backs off. I don't have to go stand in front of the freezer anymore.”
Hot flashes
Real reviews
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Specs, warranty & returns
- Cooling range: 54–61°F (12–16°C)
- Warming range: 100–109°F (38–43°C)
- Battery life: 1–3 hours cooling, 3–4 hours warming
- Charging: USB-C, full charge in about 4 hours
- Weight: about 1 lb — fits in a bag or large pocket
Cryo-1 sheds heat into the air around it and comes with some limitations outdoors. Once the ambient air is hotter than about 80-85°F it is unable to cool efficiently. Plan your use and expectations accordingly.
- Cryo-1 device
- USB-C charging cable
- Quick-start guide
Every Cryo-1 is covered by a one-year limited warranty against manufacturing defects. If something goes wrong, we repair or replace it.
Try Cryo-1 for 15 days. If it isn't for you, send it back for a refund. Return shipping is paid by the buyer: we provide a prepaid label and deduct its cost from your refund. Returns must be in as-new condition with everything that came in the box, or a restocking fee of up to 50% of MSRP may apply.
MeetCryo-1
Portable palm cooling and warming.
Have a question?
FAQ's
One to three hours of cooling, or three to four hours of warming, on a single charge. It depends on how hard you run it. Charges with USB-C like your phone.
Switch it on and let it run on its own for 1 to 2 minutes so it reaches temperature. Then hold it in your palm for 1 to 2 minutes to cool down, or as long as you like on warm. If you're having a hot flash, keep holding it until the heat eases off. Training? Leave it running on medium cooling for the whole session and grab it between sets. Medium also makes the battery last longer.
No. Ice is so cold that your body closes off blood flow to protect your skin, which is the opposite of what you want. Cryo-1 stays cool but comfortable, so your blood keeps moving and keeps carrying heat out.
Indoors and in the gym, yes. Outside in real heat, no. It cools using the surrounding air, so once it's hotter than about 80-85°F it can't keep up. We'd rather tell you now than have you find out.
No. There is nothing to freeze, fill, replace or clean.
Yes. You can use it on a nightstand without waking the person next to you, or at your desk without anyone looking up.
You have 15 days to try it. If it isn't helping, send it back and we'll refund you, less the cost of the return label.
performance note
Designed for controlled conditions—not extreme heat
Take control of your temperature.
Free shipping · 15-day trial · 1-year warranty · FSA/HSA eligible