What exactly is Human Factor you ask

Ideal for cross country riders on hardpack or loose over hard surfaces

Compression moulded cuff

As long as your E-bike weighs less than 23kg you are fine to use this rack

Endura FS260-Pro Thermal Skullcap - S-M - Black Virtual Parent What exactly is Human FactorKeep your head and ears all toasty and warm on those cold crispy mornings or on night rides. This skullcap will fit nicely under your helmet to provide some extra insulation properties with its Thermoroubaix high stretch thermal fabric. It's also treated with a PFC free DWR treatment so it won't absorb all that most and frost. Who's this item for: Hardy riders that won't let a little bit of cold and frost put them off heading out for a ride.