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The Oversized Pulley Wheel (OSPW) System is the product of choice by many of the world's leading cycling teams and triathletes
6 hours of music and calls
The world isn’t flat
Waterproof case that allows you to go to an incredible 40m
alba optics delta aflens photocromatic spare parts The Oversized Pulley Wheel (OSPW)DELTA uses VZUM AF LENS, a photochromatic lens that adapts itself to the intensity of the light present in the environment and automatically changes colour, shielding off harmful UV rays of any sort. Their temporary transformation takes place in a short period of time but it is, nevertheless, gradual and independent of any atmospheric factors. The optical strain is therefore reduced to a minimum and the lenses remain active even on a cloudy day.