Palm cooling
KYLA Performance™
A pair of handles that take heat out through your palms, in the rests you already take. The warmer you get, the less muscle your brain lets you use.
- For hard efforts with rests between them.
- One in each palm, 60 to 90 seconds, every rest.
- Nothing to refill, recharge or replace.
20+ independent studies on palm cooling. None funded by us. Published research →
Not in your country yet
We do not ship to your country yet. Join the list and tell us where you are. When enough people in one place want KYLA, we look at opening it.
- The rest when we ship, 10 November 2026
- Three-year warranty
Buying for a club, gym or organisation? See the teams page →
KYLA Performance™
Not in your country yet
We do not ship to your country yet. Join the list and tell us where you are. When enough people in one place want KYLA, we look at opening it.
01 Athletes
What the athletes noticed
They were invited to test a pre-production run, with no payment and no agreement of any kind.
Functional Fitness World Champion
“If you know me as an athlete, you know heat is not my best friend, but KYLA is.”
Third place, World Championship
“Getting my heart rate down quickly between intervals has always been hard. It comes down faster with KYLA.”
1500m 3:41, 10k 29:30
“I can run at a higher pace and still keep lactate lower.”
Swedish record holder, HYROX Pro Single & Pro Double
“I use KYLA between sets to accelerate recovery and keep my output high throughout the session.”
Sweden’s Strongest Man 2023 & 2024
“You come down a gear and get cooler between sets.”
02 WHO IT’S FOR
Where it fits in your training.
No matter the sport: effort, then KYLA, then effort. Pull heat out whenever your hands are free.
It counts.
Between sets.
Keep holding as long as the break lasts.
Studies of palm cooling have used it for up to 15 minutes at a time. Hu, Aihara and Hasegawa, 2026.
03 LIMITS
IS IT FOR YOU?
- Sessions with hard efforts and rests between them.
- Any sport where a hand is free in the rest.
- A cold hall or a warm one. The heat comes from the work, not the room.
- Easy sessions. Little heat builds, so there is little to take out.
- Sessions where your hands are never free.
- Replacing training, water or sleep.
The tool does not replace the work. It lets more of the work count.
04 WHAT OWNERS SAY
IN THEIR OWN WORDS.
Unedited, published as written. So far from Founders Edition athletes, who got the pair free to build it with us. First Run reviews follow after delivery.
05 SPECIFICATIONS
The specs.
Ten times more contact than your palm touches.
| Size | 178 mm tall, 47.6 mm across |
|---|---|
| Weight | 425 g per handle, 850 g the pair |
| Contact | You touch 55 cm². Inside, your heat meets 557 cm². |
| Chill | Overnight in the fridge, five hours at the least |
| Stays cold | 10+ hours in its carry bag at room temperature, before you start using it |
| Warranty | Three years from delivery |
All specifications
| Body | Machined aluminium |
|---|---|
| Freezer | Faster, but let the pair rest at room temperature for an hour and a half first |
| Per chill | 30 to 35 minutes in your hand, about 90 to 105 minutes of training |
| In the box | Two handles, clips and a carry bag |
| Made | Designed in Sweden, made in Germany |
06 QUESTIONS
Frequently asked questions
Is it always cold?No. One chill covers one session, then back in the fridge.
It is passive, with no battery. After training, put the pair back in the fridge, overnight or five hours at the least, and it is ready for the next session. In its carry bag the pair stays cold 10+ hours at room temperature, before you start using it, so you can chill it at home and train later.
Can I just hold something frozen instead?No. Too cold narrows the vessels in your palm, and a frozen object only takes heat where it touches.
No, and for two reasons. Something very cold makes the vessels in your palm narrow, so less blood reaches the surface and less heat leaves. And a frozen object takes heat only where your palm touches it, and that thin layer warms in seconds. Inside KYLA the heat spreads into ten times more cold surface than your palm touches, so it keeps leaving. The surface sits around 14 °C. The goal is not maximum cold. It is maximum heat out.
How is this different from other palm cooling devices?Most are built to stay cold. We built ours to keep moving heat.
Other cooling devices are built mostly to hold a temperature. We built ours to move heat. Holding a setpoint caps how much heat you can pull out during a rest.
KYLA carries its cooling capacity and spends all of it on transfer. The trade is real and worth saying out loud: it is spending its charge from the moment it leaves the fridge, so a pair stays ready for 10+ hours in the carry bag, and gives 30 to 35 minutes of contact once you start holding it. There is nothing to charge and nothing to wear out.
Why isn’t it colder?Colder feels like more and delivers less. The surface sits around 14 °C.
Past a point the vessels in your palm constrict, blood flow to the surface drops, and less heat reaches your core. Colder feels like more and delivers less. What decides the result is how much cold surface the heat can spread into, not how cold the grip feels. The surface sits around 14 °C. That is the point of it: keep the vessels in your palm open, and the most heat leaves the body.
Can I make it last longer?Yes, hold one at a time. Both hands together move the most heat.
Used together, both handles drain at the same time, so a pair lasts about as long as one. Use them one at a time instead and you roughly double your active time, minus a little to passive warming in the handle you are not holding, but each rest moves less heat. Both hands together move the most heat, which is what we designed for.
Can everyone use KYLA Performance?Most people, yes. Check first if circulation or hand sensitivity is a concern.
KYLA Performance works with the body’s natural heat release system. Most people can use it without any issues. If you have a condition that affects circulation or sensitivity in your hands, check with a healthcare professional before use. Avoid use on injured, numb, or broken skin.
07 RESERVE
JOIN THE FIRST RUN.
- €295,00 for the pair. €29,50 today, the rest when we ship.
- 90 days to decide. Full refund if it is not for you, deposit included. Ships 10 November 2026 to the EU and Norway.