The Baby Head protector helmet/Toddlers Walking Cap is made of high-quality fabrics, soft touch, good air permeability so that the baby is comfortable to wear. The baby hat is filled with PP cotton with excellent resilience, providing excellent help when falling. Adjustable 18-24'' circumferences Applicable Age Range: 6-12 Months 1-2 Years Old Material: cotton+sponge. Features soft, breathable, quickly dry, high elasticity, comfortable, adjustable, machine washable. Combined with fashion and care, the protective cap would be a good choice for your loved babies. NOTE: 1.NOT a professional cap for biking. 2.Your baby may not adapt to the helmet at first, if you can't be patient with your baby's adaptation process, please buy carefully. 3.Even wear this soft baby crawling hat, baby also need to be taken care by adult.