alba optics delta vzum%E2%84%A2 alens Lens Choice:MR ALU during which the drivetrain automatically

during which the drivetrain automatically shifts between the front chainrings

DUB bottom bracket adds durability

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Built-in front wheel block for road and MTB

Relieve muscle & joint soreness

alba optics delta vzum%E2%84%A2 alens Lens Choice:MR ALU during which the drivetrain automaticallyDELTA uses VZUM A LENS made from scratch resistant polycarbonate, with a non centred base 6 that enables fixed vision without side view distortion. The curve covers an optical cone of 180, providing excellent protection against the wind and strong light, that often reflects on other sunglasses creating an eye blinding effect. The shock absorbent, unbreakable material provides excellent resilience. FEATURES Ventilated VZUM lens Interchangeable VZUM