Shane Coburn spent 5 years of design before he even had a prototype skate in hand, awesome story, awesome product.
Beware the older models with verlcro ankle straps, upgrade to regular buckles. Something about the velcro looses power on every push. Makes you work harder to get speed.
Even with proper foot wraps and OE heel pad... very flat foot sensation. Xsjado is the opposite sensation of riding a raised heel skate IMO.