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cheap motorcycle half helmets TRUSTERTHEE with Face Shield, German Style Motorcycle Helmet for Adult Men Women, DOT Approved Retro Half Shell Helmet for Moped Cruiser Scooter (Medium, 1Bright Black) : Automotive Premium Canvas Backpack with Arc'teryx Accessories Finish it off with Size (Height):46"

Premium Canvas Backpack with Leather Detailing – Durable Travel, School & Work Bag for Men & Women

: 10 Steps (with Pictures) - Instructables

Arc'teryx Accessories

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The adjusting dial is to set the spring tension and change the brake-saturating point.(see left picture below) The system doesn't change the brake profile at slower than the set speed

Finish it off with a DOT approved micrometric quick release chinstrap and you have all the convenience and comfort of a traditional motorcycle half helmet but with the technology of the future