The Stack’s innovative design offers unrivaled space saving and modern styling, and has a double safety certificate in the US and EU. Weighing only 330 grams, The Stack features hidden air vents for extra breathability, a dependable locking mechanism when fully expanded, and an adjustable elastic strap.

• Reduces size by more than 40%
• Weighs only 330g
• Comfort Adjustable Elastic Strap
• Ventilated with Hidden Airflow Openings
• CSPC Certified in US & EN1078 Certified in the EU

Estimated shipping date of December 18th, just in time for Christmas delivery!

• Medium (most common size) fits riders with head circumference of 56-59 cm
• Large fits riders with head circumference of 60-63 cm