1. Protects cleats during whole ride. Very light weight 2. Z version lasts four times longer! Ride at atleast 4000 miles without any problem these are designed to stay on your Speedplay Zero or Light Action cleats at all times. 3. Clip in or out as usual. No more hunting for covers at breaks. No need to take them off when break is over. Just put them on and forget them. These are not made for X series cleats. Each pack come with 2 cleat cover. Each cleat cover weigh about 0.04lbs (Cleats in the photo is sold separately). 4. Material: TPU
