Brand new from Dribble ons, some great new fun designs Dribble Ons provide a stylish and clever solution for babies who constantly dribble. Dribble Ons are made of a soft combination of stretch cotton and terry toweling which absorbs the moisture whist at the same time being comfortable and cute to wear. Designed to compliment the Sock Ons range and make a great gift purchase. Front: 95% Cotton 5% Elastane. Terry Backing: 75% Cotton 25% Polyester.