Dynamx™ Skull Helmet Liner

Seirus Dynamx™ Skull Helmet Liner


Item No. 23963333_000_000
CAD$ 29.99 CAD$ 14.94 (50% off) Final Sale
Only ships to Canada
The Dynamax™ Skull Liner works perfectly under a helmet for snowy, winter bike commutes or extra warmth at the hill. The Thermax® micro-fleece is thin, warm, wicking, wind-blocking, and stretchy for a comfort fit that you'll love.


Add to Cart Options

Product Actions

Available for Shipping:

In Stock

Hurry, only a few left!

Available for in-store pick up.

Footwear Accessories

Everything you need for shoe care. Cleaners, protectors, laces, insoles and more.

Shop Now →

Curbside Pickup is available at participating locations.

Curbside pickup orders take ~2 hours to fulfill. To check in-store availability, click the “Find In-Store” button and enter your postal code. Learn More

Review our Help & FAQs page
Delivery & ShippingReturns & Exchanges

Additional Information




Hollow-core polyester fiber with a soft hand. Used for its insulating properties.


  • Dynamax dual density micro-denier Thermax fabric
  • Thin, warm, wicking, wind-blocking, stretchy
  • Product ID#: 23963333
  • Vendor Style#: 22300-001