The 174HUDSON Stack Packable Helmet

$ 79.99

The Stack 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
  • Designed in collaboration with CLOSCA, who is known for their innovative design that appreciates detail and changes the lives of their customers

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


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Priority Bicycles are sent on all business days from our warehouse in Pennsylvania. All orders received by 12:00 EST will be shipped out that business day. Orders after 12:00 EST will be shipped the following business day. Click here for approximate US shipping times.

We feature a 30-day no questions asked return policy on all non-final sale goods. We stand behind our products 100% and if you aren’t entirely satisfied, send them back. You are responsible for actual shipping/assembly fees only. Bicycles marked as final sale carry a full warranty, however, are not eligible for return.

For more information on our return and warranty policies click here.

We're available to help seven days a week, simply email us for questions on fit or features.