1.The black is a design, it consists of a combination of aluminium alloy material and highquality plastic 2.Strong and lightweight: with highlight bearings, you don't have to worry about pedal breakage. Fully sealed bicycle pedals prevent the accumulation of water and dust on the spindle, ensuring excellent durability and performance. Let you enjoy cycling in rain or climbing. 3.Ergonomic foldable design: the pedal is fashionable and foldable, making it convenient and easy to store and use. With its unique shape, the pedals adapt to the mechanics of the human body, and they are foldable so they stand very stable on the wall. 4.Easy to install: L is used for the left pedal, R is used for the right pedal, universal standard 9/16 inch universal bicycle pedals suitable for mountain bike, folding bike, road bike, fixed gear, BMX, MTB, cruiser, cyclocross bike, etc. 5.Nonslip nail: nonslip nails on each side provide more on the pedals and keep your feet in place. Even if they are covered with a thick layer of mud after a muddy ride, you don't have to worry about your feet slipping off the pedals