If a rented ski boot breaks or loses its function during use, the technical cause controls the legal assessment. The condition at handover, fit, rental instructions, maintenance and use, and the specific accident mechanism must be examined separately.
The guest and rental shop have a contract. It may create duties to hand over suitable equipment, provide relevant information and organise the rental carefully. Product Liability Act issues may also arise where the product was defective. An injury or broken boot does not replace proof of breach, defect and causation.
This article addresses defective or unsuitable rented ski boots only. Binding adjustment, a damaged rental ski and general slope collisions raise separate legal issues.