The boot that raises the bar. Developed and used by professional hard enduro rider Billy Bolt.

The Crossair HD is the world's first boot designed and built specifically for hard enduro and super enduro. It offers all the qualities of Sidi's premium products, weighing just 1700 grams (size 43), making it significantly lighter than any other alternative. The fiberglass-reinforced internal exoskeleton provides all the support and safety needed, while maintaining an incredibly lightweight structure. The rubber sole is stitched directly to the upper, and what makes it unique is its design and composition derived from trials boots. This allows the boot to be lightweight, protective, and offer unparalleled grip both on the pedals and on any terrain during hard enduro activities. The Crossair HD is the result of tireless dedication to engineering a product that, through continuous evolution, has satisfied all of Billy's requests and responded to his every need. It embodies the perfect fusion of Billy Bolt's unparalleled style and Sidi's manufacturing expertise.

Technical Specifications:

Style: Enduro
Weight: only 1700 grams for size 43
Fiberglass-reinforced internal exoskeleton for support and safety
Stitched rubber sole for superior grip
Closure and Protection Systems
Velcro closure for a secure fit
Micro-adjustable and replaceable buckles
Anti-extension system to prevent injury
Materials and Comfort
Front plate for advanced protection
Anatomical heel and adjustable calf area
Replaceable metatarsal inserts
Toe area with thermoplastic protector
Innovative Design
Inspired by trials boots for a unique design
Developed to meet the demands of rider Billy Bolt
Complies with CE EN 13634