FEND helmet folds by 50%, fitting easily into any bag or backpack. Model is made from durable ABS plastic, ultralight polycarbonate, and impact-absorbing EPS, offering reliable head protection. Smooth matte finish and refined design support comfort during daily rides. An integrated adjustment system, replaceable pads, and adjustable straps help achieve a precise and stable fit. Suitable for bicycles and e-bikes with speeds up to 20 mph