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It comes down to how long you're out and how demanding the terrain is: X Pro S suits half-day outings, X Max S is built for longer adventures that need more range, and X Ultra S is for extended trips and the most demanding terrain. Compare the models or explore our fit guide for the details.

Compare models Fit guide

Fit comes down to how the hip belt and thigh straps adjust to your body. Follow the quick-start guide on this page to put it on and adjust it, and if you are unsure about anything, contact our support team before you order.

Quick-start guide Contact support

Orders placed before 2pm on a working day ship the same day, tracked, from within the United States. You will get the tracking number by email the moment it leaves.

Thirty days from delivery to request a return. It has to come back unworn, with tags and in its original packaging. If it is not for you, contact us and we will send a return label.

No. This is outdoor equipment for people who already walk. If you are looking for a mobility aid, that is a different product under different regulation, and we would rather say so than sell you the wrong thing.

Two years on the frame, motors and electronics. Batteries are a wear part, like tyres — they are covered against defects but not against normal capacity loss over time.

The frame, yes. The battery is the question: at 72 Wh it is under the common 100 Wh cabin limit, but rules differ by airline and by country, and packs usually cannot go in checked baggage. Check with your airline before you book, every time.

IP54. Rain, spray and dust are fine. Submersion is not, and river crossings above the waist will end badly.

Charge it with the 65 W charger it came with, store it around half charge if you are not using it for a while, and keep it out of a hot car. The Ultra S ships with anti-cold packs for winter use.

You keep walking. The frame moves freely unpowered, so a flat battery costs you the assistance and the weight of the unit, not your day out.