Collapsible Bike Helmets


The Small Helmet With Huge Possibilities

The Stack offers unrivaled space saving with modern styling, backed by a double safety certificate in the US and EU*. Weighing only 330 grams, The Stack reduces size by almost 50% making it perfect for commuting, bicycle share, or scooter share.


Less Can Do More.

The Stack reduces in size by almost 50% and collapses vertically, making it ideal for backpacks, totes, briefcases, and more.


Say Goodbye To Bulky Helmets.

Weighing only 330g, The Stack has hidden air vents and an adjustable elastic strap for a lightweight and ventilated design.

  • Medium (most common size) fits riders with head circumference of 56-59 cm
  • Large fits riders with head circumference of 60-63 cm
  • Reduces in size by almost 50%, Weighs only 330g!
  • Comfort Adjustable Elastic Strap, Well Ventilated with Hidden Airflow Openings
  • CSPC Certified in US & EN1078 Certified in the EU


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