We take special care to ensure our products for small bikers meet big expectations! The outside diameter of our NATURAL FIT Grips KIDS is ergonomically tailored to fit kids' hands perfectly. The inside diameter slots easily onto 19 mm handlebars and the grips are compatible with grip shifters – which are found on most kids' bikes. Fins help to take more pressure off small hands and special finger grooves ensure a perfect hold. And when life goes too fast and the bike ends up on the floor, the grip's bumpers and extra-durable material shrug off bashes and scrapes without a fuss.