Ski helmets over time: from early felt caps to modern MIPS-equipped models with impact sensors.
From pioneer caps to smart helmets: slope safety evolves with speed and technique.

From steel and felt to EPS foam

  • Before 1950: caps and hard shells borrowed from motor sports were common.
  • 1950–1990: thermoplastics and EPS foam arrive—mass and ventilation become key.
  • 1990–2010: lightweight composites, in-mold construction, improved aerodynamics and goggle integration.
  • After 2010: rotational systems (e.g., MIPS), multi-density foams, impact sensors and Bluetooth features.

Rotational protection and “smart” features

Serious head injuries often involve both linear and rotational accelerations. Systems like MIPS add a low-friction slip layer inside the helmet to reduce rotational loads during oblique impacts. Modern models also integrate sensors that capture acceleration/rotation and can notify apps or contacts after a significant event.

Schematic of a modern ski helmet: MIPS slip layer, EPS core, and an embedded impact sensor.
Modern helmet cross-section: outer shell, EPS core, rotational slip layer, and sensor module.

How to choose: fit, standards, and care

  1. Fit & stability: snug but comfortable; Y-straps align at the ear.
  2. Standards: look for EN1077 (alpine) and any rotational protection markings.
  3. Care: replace after a major impact; air-dry; avoid solvents.

Fun fact: the slip-layer concept was adapted from cycling injury research and quickly found its place in snow sports.