We had the Hypershell unit for three weeks before we took it on the trail. That was deliberate. We wanted to understand what it was before we put a guest in it.
The Hypershell is a lower-body exoskeleton — two carbon-fibre leg supports, a hip motor, and a torso harness. It reads your gait through sensors and applies assistive torque to your hip flexors on the upstroke, reducing the muscular effort of climbing steep terrain by roughly 40 percent, according to the manufacturer. It weighs 1.8 kg. It fits in a large backpack. It charges via USB-C.
Our first proper field test was in August 2025. The route: Govindghat to Ghangaria, the 14 km valley approach to Valley of Flowers. This is a route we know extremely well. The first 8 km follow the Pushpawati river on a paved path, moderate grade, very manageable. Then it steepens. The final 6 km to Ghangaria gain around 800 metres of elevation on a narrower trail. This is where knees usually start complaining.
Our test group was four people. Me. Our guide Mohan, who has done this route more times than he can count. A 34-year-old man who does marathons and wanted to see whether the device changed anything for him. And Savitri aunty — not her real name, but she asked for anonymity — a 58-year-old retired school teacher from Dehradun who has wanted to see Valley of Flowers since she was a child and has spent the last decade telling herself her knees wouldn't allow it.
Fitting the Hypershell takes about eight minutes once you know what you're doing. The hip width is adjustable. The leg struts have three length settings. The activation button is on the right hip, and the device boots in about thirty seconds. When you first start walking with it switched on, the sensation is strange — like something is helping you that you can't quite locate. By the time we reached the 3 km mark, Savitri aunty had stopped noticing it.
She made it to Ghangaria in four hours and forty minutes. That is a reasonable pace for a fit 35-year-old. Her knees, she told us, felt like they were on a flat road rather than a steep trail. At Ghangaria she ordered tea and looked across the valley with an expression I don't have a word for.
What surprised us: the device is loudest on the transition between flat and steep. On consistent grades — either flat or climbing — it becomes almost silent. The noise is a rhythmic click-whirr, about as loud as a ceiling fan. None of the other trekkers on the trail appeared to notice or care.
What didn't surprise us: the marathon runner didn't feel much benefit. At his fitness level, his muscles weren't the limiting factor on this route. The device is most useful when the limiter is strength or endurance rather than cardio, which means it's best for people who are generally healthy but whose legs have started saying no to steep ascents.
What we'd change: the harness is not designed for a three-day trek. On day two, Savitri aunty had some chafing at the hip straps. We've since modified our kit with neoprene padding for longer trips. The manufacturer knows about this; apparently a softer harness is coming in the next version.
We ran the Valley of Flowers Hypershell trek commercially for the first time in September 2025 with two guests. Both made it to the valley. One cried when she saw the flowers. The other took a hundred and forty photographs.
We're running four Hypershell treks this season: Valley of Flowers (July–September), Auli meadows, Chopta–Tungnath, and Roopkund approach. The devices are available for full-trip hire. You don't need to be unfit to use one — you just need to want to go further than your legs usually allow.
That is, we think, a good reason.