Strauss Gel Seat Cover (Black) and Bicycle Speedometer, (Black/Red) Thick pad with shock absorption function and soften the riding, inner side the seat cover with gel-point, ensuring the seat does not slip after installation With 3d anti-slip granules on the back, necessary tool for your outdoor cycling. High density sponge slip mat comfortable and soft, ergonomic design This bicycle speedometer is waterproof and works great on rainy days as usual when riding Portable size, light weight, wide application this bike odometer is only for 1.8 x 1.8 inches (l x w) and 0.18 lb, which is easy to carry and save your space Multi functions with auto sleep and wake-up its records speed in mph/kmph, riding time, distance, scan, maintenance alert