
Overview
The Sidekick is the consumer version of the ankle exoskeleton that Dephy, an MIT Media Lab spin-out in Maynard, Massachusetts, has sold to research labs and the US Army as the ExoBoot. Each unit clips magnetically to a proprietary carbon-plated sneaker (Dephy Active or Comfort) and straps to the calf, then pushes the heel down at toe-off, which testers at CES 2026 described as an extra calf muscle. It is aimed at people with limited walking stamina rather than athletes, works on flat ground, stairs and grades up to about 20%, and is sold as a lifestyle and wellness product that is explicitly not a medical device, though some buyers can use HSA or FSA funds. Dephy is also the robotics partner on Nike's Project Amplify powered shoe. Catches are the price, the 2.8 kg total on the lower legs, the need to wear Dephy's own shoes, and shipping only within the US (unconfirmed for other countries). It launched at CES in January 2026 and is in stock in two trim colours, with other trims and the Comfort shoe currently sold out.
Specifications
| Category | Exoskeletons & exosuits · Consumer & outdoor |
|---|---|
| Released | 2026 |
| Country | USA |
| Availability | Available |
| Programmability | No programmability |
| Built-in autonomy | Reactive · Responds to its surroundings without a map, such as avoiding obstacles or following a person |
| LLM support | None · No voice assistant or LLM. |
| Best for | Ages 16+ (estimated) |
| Vision sensors | No vision sensors |
| Actuators | Brushless / direct-drive motors |
| Audio | No audio |
| Compute type | Proprietary / undisclosed |
| Control | Buttons only |
| Weight | 1.4 kg per side (with battery) |
| Assistance | A motor on each shin drives the shoe's heel to add push-off at the end of every step, the ankle being where up to 60% of walking energy comes from; three power levels, auto-calibrated in 20 strides. Torque is not published. |
| Joints | Ankles |
| Battery & runtime | Two swappable packs, 1.5 h to full; up to 8 km (5 mi) per charge at power level II, about 5 km (3 mi) at level III and further at level I. |
| Operation | A button on each battery pack powers the unit and steps through the three power levels; no app. The shin lever and calf strap are custom-fitted to the buyer's measurements. |
| Sensors | Onboard gait sensing that learns the wearer's stride (IMU and motor encoder (unconfirmed)) |
| Compute | Not published |
| SDK | None. Dephy's research ExoBoot has a programming interface, the Sidekick does not. |
Timeline
- ReleasedSidekick launched to consumers at CES 2026 at $4,500 Engadget ↗
Ratings & reviews
Ratings and reviews load on the live site.
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Image credits
- Image 1: source (official product image)
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