The 174Hudson Stack is a unique folding helmet that offers all the protection of a standard unit but is easier to stow and carry when not in use.

Having passed rigorous testing in both the EU and the United States, the helmet is fully certified. When donned properly, the three tiers of the 174Hudson Stack lock into place. In this configuration, it forms a constant barrier between your head and an impact surface at all angles.

When folded, the 174Hudson Stack helmet is almost 50% smaller than when it is expanded, and at 330 grams, it's also lightweight. The helmet has sleek front air vents and an adjustable chin strap, making it comfortable, and with two sizes, it accommodates a wide range of head dimensions.

Sizing:

Medium (most common size) fits riders with a head circumference of 56-59cm

Large fits riders with a head circumference of 60-63cm

Specs:

Reduces in size by almost 50% (less than 10 cm tall)
Weighs only 330g
Comfort Adjustable Elastic Strap
Ventilated with Hidden Airflow Openings
CSPC Certified in US & EN1078 Certified in the EU
Designed in collaboration with CLOSCA

Ships 1-2 business days from order date.

Cycling

Priority Bicycles 174Hudson Stack Helmet - Onyx/Grey

Priority Bicycles 174Hudson Stack Helmet - Sea Foam/Red

Priority Bicycles 174Hudson Stack Helmet - White/Charcoal

Priority Bicycles Proof