Device

Your Invisible Instructor

Turn any ski boot into your personal coach

The world's most advanced ski sensor

  • 72 Pressure Sensors

    world's most advanced ski wearable

  • 9-axis 3D motion

    accelerometer, gyroscope and magnetometer

  • Compact, Lightweight Design

    <3mm thick & 296g per foot

  • available in 3 sizes

    find your perfect fit

  • installation
  • fit + comfort
  • common questions
  • what it measures
  • tech specs

Explore The Device

Fits in over 35,000 boots

When we built Carv, we knew it was crucial that the insert doesn’t affect the fit of your boots. It’s why we offer a 100 day boot fit guarantee.

Our 35,000 skiers have Carv installed in a vast array of boots from a range of manufacturers.

3 sizes for the perfect fit

Carv comes in 3 sizes so that it can accurately measure your motion and pressure as you ski, whatever your boot size.

Carv is available in D, E, and F sizes, and all 3 come equipped with 72 pressure and motion sensors.

Use our size guide below to find your Carv size.

SizeDEF
US Mens4 - 6.57 - 10.511 - 14
US Womens5 - 7.58 - 11.512 - 15
Mondo22.0 - 24.525.0 - 27.528.0 - 30.5
Europe35 - 38.539 - 4343.5 - 47.5
UK3 - 5.56 - 9.510 - 13

Common Questions about
the Carv device

  • Will it fit in custom boots?

    Yes, absolutely. Most of our customers have customised boots and insoles. Carv fits between the liner and the boot board (the plastic base) - so the modifications you’ve got won’t be affected. It may take up a few mm of volume, but your liners will likely pack out a touch and balance this out.

  • Does it work with custom insoles?

    Yes. Carv goes under the liner - on top of the boot board. This means that heel lifts, custom insoles (e.g. Surefoot), and boot warmers are not affected and are compatible with Carv. You can use them both at the same time.

  • Will Carv cause boot discomfort?

    99% of our customers are happy with their Carv fit- even pros like Ted Ligety ski with Carv without boot mods. Because it fits under the liner, there is padding to accommodate the 3mm volume. If you do have a pinch, a boot fitter can rectify issues. If not, you are protected by our boot fit guarantee.

What can
Carv measure?

Every turn, Carv compares your motion and pressure data with our database of 350 million turns to give you scores for 13 performance metrics.

When you stop, you’ll get an overall performance score - your Ski:IQ™ - calculated by our algorithm tuned on the data of the best skiers in the world.

How it works

Designed with data
from millions of turns

From the very start, we knew that we had to make Carv unnoticeable in your ski boot.

As weve grown we’ve captured 350 million ski turns from over 200 types of ski boot, all recording exactly where skiers are putting their weight in their boot.

Over the years we’ve been able to refine the way we route the wires, where we place the chips, and how we attach the cable, so Carv stays out of the way, but still robust enough to take a hard day of skiing.

How we built carv

Built to survive the snow

Carv’s battery pack sits on the strap of your boot with a specially designed clip and a robust case designed to be snow-proof, waterproof, and survive hits against the hill.

We designed a battery optimised to handle the cold, giving you over 3 days of skiing per charge. That’s more than anyone’s quads can handle.

Tech Specs

Compatible

with custom ski boots and insoles

Weight icon

Compact, Lightweight Design

<3mm thick & 296g per foot

Pressure icon

72 Pressure Sensors

world's most advanced ski wearable

Motion icon

9-axis 3D motion

accelerometer, gyroscope and magnetometer

3 day battery

using low energy Bluetooth

Waterproof icon

Fully Waterproof Design

built for the snow

Want to know more?

Yes, Carv is the same thickness as a boot warmer at 3mm. It will fit in almost all ski boots including stock boots, custom moulded boots and boots with custom insoles. We offer a boot-fit guarantee so you can find the perfect match with Carv.

Yes. Carv goes under the liner - on top of the boot board. This means that heel lifts, custom insoles (e.g. Surefoot), and boot warmers are not affected and are compatible with Carv. You can use them both at the same time.

Yes! Carv is installed between the liner and the shell of your ski boots, whereas custom orthotic foot beds and heel lifts sit inside the liner.

Carv is therefore compatible with custom foot beds and heel lifts.

If you have Canting insoles or heel lifts, please make sure you put your Carv inserts underneath these.

99% of our customers are happy with their Carv fit - even pros like 2x Gold Olympic Champion, Ted Ligety, ski with Carv without boot mods. Because it fits under the liner, there is padding to accommodate the 3mm volume. If you do have a pinch, a boot fitter can rectify issues. If not, you are protected by our boot fit guarantee.

We do not guarantee compatibility with Apex or Dahu boots. Carv is designed for fully enclosed ski boots, however, we have had multiple accounts of customers successfully using Carv in these boots.

Please see our full article on boot compatibility here.

  • Carv works with regular headphones, Airpods and any other bluetooth headphones. See our recommendations here.
  • Almost all helmets work with in-ear headphones, so you don't need to make adjustments to your current helmet
  • If you do not want to ski with headphones, you can still improve with text-based tips, scores and drills.

The battery was built to handle the snow and lasts for 3 days.

Yes! Our batteries have a Watt-hour rating of 2.59Wh and capacity of 700mAh. This is well below the 100Wh limit according to various aviation authorities.

Carv

(2x inserts, 2x trackers)

  • Box icon

    Free tracked worldwide shipping

  • Warranty icon

    Unlimited lifetime warranty

  • Box return icon

    100 Day Returns

  • Feet icon

    Boot fit guarantee