Palm cooling
KYLA Performance™
Heat drops your output before your muscles do. KYLA pulls it out through your palms in the rest between efforts.
KYLA does not make you fitter. It lets you do more work. More work is what makes you fitter.
In the box: two handles, one for each hand, plus clip, carry bag and brand book.
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.
How the deposit works
Buying for a team, a club or a gym?
We do not have a group price list yet. The First Run is small, and we would rather answer you properly than send you a PDF.
Tell us how many pairs you need and how the group trains, and we will come back with a straight answer on price and timing.
Trusted by athletes
A selection of the athletes training with KYLA before launch.
Harry Lightfoot
CrossFit Games Athlete.
KYLA has become one of my most used training tools to recover within sessions and bring more intent to what I'm doing.
Pelayo Menendez Fernandez
Hyrox, Elite 15 Athlete and Coach.
Better repeatability between intervals, more stable output, and faster recovery between efforts.
Jeppe Risvig
Runner, 1500m in 3:41 & 10k in 29:30.
I can run at a higher pace and still keep lactate lower.
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.
What the athletes noticed
Athletes ranging from F1 and IndyCar to tennis, HYROX, CrossFit and endurance. Here are some of them in their own words.
They were invited to test a pre-production run, with no payment and no agreement of any kind.
CrossFit
“One of my most used training tools, to recover within sessions and bring more intent to what I am doing.”
Strongman
“You come down a gear and get cooler between sets.”
HYROX
“Getting my heart rate down quickly between intervals has always been hard. It comes down faster with KYLA.”
Running
“I can run at a higher pace and still keep lactate lower.”
HYROX
“I can hold on longer when I cool the body down during the effort.”
Padel
“It helps me get back to the focus I need, because the body and the head recover so much faster.”
HYROX
“Better repeatability between intervals, more stable output, and faster recovery between efforts.”
Padel
“It works on hard sessions in hot, sweaty conditions. Faster to reset.”
HYROX
“I use KYLA between sets to accelerate recovery and keep my output high throughout the session.”
01 WHO IT'S FOR
Where it fits in your training.
Chill it before the session. In the roxzone between stations, and between metcon rounds, hold one in each palm for the minute you already rest. Race day and training day work the same way.
Between sets, where you would normally scroll or pace: one unit in each palm for 60 to 90 seconds. Put them down, lift. The late sets stay closer to the first. Cim Johansson, Sweden's Strongest Man and Rogue Axle world record holder, trains this way.
Interval and threshold days: hold it through each recovery jog or standing rest. On longer efforts, use the natural breaks. The same pace should cost less late in the session.
Points are too short to cool. Changeovers are not. Hold it between games and at side changes, and start the next game cooler. Simon Vasquez, Swedish national padel player, does exactly this.
Mostly pre-cooling. Palms on the units in the minutes before the start, then again between stints while the car is worked on. Marcus Ericsson, Indy 500 champion, and Dino Beganovic, Ferrari Academy driver, use it this way.
Shifts, substitutions, halftime. Hold one in each palm on the bench and start the next shift cooler. Built for the stop-start rhythm of hockey, football, and handball.
KYLA fits inside training, not after it. It does not add a step, it uses one you already take. The only thing to remember is the night before: the pair goes in the fridge. And heat doesn't care what level you're at: if your session has hard efforts and short rests, this works the same way.
02 THE RESEARCH
PALM COOLING IS NOT NEW. THE EVIDENCE IS NOT OURS.
Independent research from sports science institutions, none of it funded by us. Results vary, and some found no effect. Those are on the studies page too.
We have not found a palm cooling system that removes more heat per rest period than KYLA. If you know one, tell us. We will test it and publish what we find.
BEHIND THE TOOL
September 2026
Novak Djokovic and the changeover
September 2026
Chess, cognition, and temperature
September 2026
Cooling vest or palm cooling: which does what
September 2026
Why two hands is 1.6, not 2
September 2026
Passive or battery-powered palm cooling: what electricity buys you, and what it does not
August 2026
The bedroom is the most underrated performance variable
03 SPECIFICATIONS
EVERY DETAIL.
Materials, dimensions, contents, care. The full technical picture.
- Size
- 178 mm tall, 47.6 mm across
- Weight
- 425 g per handle, 850 g the pair
- Body
- Machined aluminium
- Surface
- Holds between 13 and 15 °C
- Active use
- 35 to 40 minutes of effective heat extraction
- Stays cold
- 7+ hours in its carry bag at room temperature
- Pre-cool
- Fridge, 5 hours or more
We built KYLA for effect, not endurance. The core is sized for a session, not a day: about 35 to 40 minutes of contact, which is more than a two-hour workout uses, because you only hold it during the rests. Pulling heat this fast is what empties it, and we would rather empty it than hold back.
LIMITS
WHAT IT WILL NOT DO.
It does not make you fitter.
It changes how hard you can keep pushing across a session, and pushing is where the adaptation comes from. The work it adds lands at the end, in the sets you would otherwise have cut short, which is where most of the adaptation signal sits. The training still has to happen.
It is not a substitute for water or for pacing.
Heat is one input. Hydration, sleep and how hard you went out are the others.
The harder the session and the warmer the room, the more heat there is to take away.
In a cold gym at an easy pace, there is less for it to do.
It needs a free hand.
You hold it, so it works whenever a hand is free: between sets, between rounds, between stations, walking to the next one. If your session never leaves a hand free, it is harder to fit in.
The evidence is about the mechanism, not about this object.
Palm cooling has been studied for twenty years. KYLA Performance has not been through a trial of its own yet. The studies are underway and we will publish what they say, including if they say nothing.
Frequently asked questions
Quick answers to the most common questions about KYLA Performance. For more, see the full FAQ.
Why does KYLA Performance cost what it does?
You buy it once. There are no refills, no cartridges, no batteries and nothing to subscribe to, so after the purchase the only running cost is the fridge space it takes up overnight.
The price reflects a first production run built in small numbers, and a unit that has to keep working through years of sessions rather than one season. Prices differ by market because of local tax, duty and shipping, so the figure you see on this page is the one for your market.
If it does not earn its place in your training, send it back within 90 days of delivery for a full refund.
How do I prepare it before training?
Place KYLA Performance in the refrigerator the night before, or a minimum of five hours before use. The freezer is faster if you are short on time, but it overshoots, so let the pair come up a little before you train. Too cold is not better. Once pre-cooled, a unit stays effective for 7+ hours in the carry bag.
How long does a single pre-cool last during a session?
A fully pre-cooled unit delivers 35 to 40 minutes of effective heat extraction during active use, depending on training intensity. Across a two-hour session, that works out to roughly twenty minutes of use per hour, typically enough to cover the rest periods in a session.
How long does it stay cold between sessions?
Kept in its carry bag, 7+ hours at room temperature, not in active use. That is the window between leaving home and starting training. For longer windows, refrigerate on site if possible.
Can I use ice packs instead?
No. Holding something very cold causes blood vessels in your palms to constrict, which reduces blood flow to the surface and slows heat release. KYLA Performance is engineered to hold a temperature between 13 and 15°C, cold enough to extract heat continuously, warm enough to keep blood flowing. The goal is not maximum cold. It is maximum heat transfer.
How is this different from other palm cooling devices?
Other cooling devices are built mostly to hold a temperature. We built ours to move heat.
A device like that spends its energy keeping a surface at a setpoint. That is a reasonable goal, but it caps how much heat you can actually pull out during a rest.
We went the other way. KYLA carries its cooling capacity and spends all of it on transfer. You chill it in a fridge, or a freezer if you are in a hurry, and one chill covers a two-hour session.
The trade is real and worth saying out loud. From the moment it leaves the fridge it is spending energy whether you are training or not, and it is finished after about seven hours.
What you get for that trade is more heat out of your palms per rest than anything we have measured against, with nothing to charge and nothing to wear out.
Can everyone use KYLA Performance?
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.
Can I cancel my pre-order?
Yes, anytime before shipment, for a full refund. No questions, no fees. After delivery, you have a 90-day money-back guarantee. You are notified directly if anything changes about the timeline.
When will my order ship?
Your reservation is for the First Run, shipping October 2026. We confirm the shipping window with reservation holders before anyone else. You'll receive a tracking link as soon as your order ships.
RESERVE
JOIN THE FIRST RUN.
- The First Run ships October 2026 to the EU and Norway. A second run opens once it ships.
- 90-day money-back guarantee, counted from delivery.
- £255.00 for the pair. A 10% deposit secures your place in the First Run.