❤Adjustable Size: Helmet for toddlers running infant helmet for crawling walking protective cap is adjustable, and baby helmet for crawling walking suits for baby age 8-60 months and head circumference 16.9''-22''. ❤Cotton Material: Weighs just 3 oz with thickness an inch, baby helmet protective caps are lightweight, sweat-absorbent, breathable and soft to protect the little babies. The outer layer is made of cotton, the fill-in layer is a high density and elastic sponge free from smell. The sponge offers shock-absorbing and can reduce the impact force when hit in daily use. ❤Protect Baby’s Head: Safety baby helmet offers most ideal protection when toddlers learning to sit, walk, crawl or play. The head cushion can effectively protect the baby during the collision and the friction caused by the bump and fall. The bumper bonnet does provide a shock absorption, impact resistance and cushioning effect, prevent or reduce injuries. ❤The baby head protective cap is designed for your active kids who are learning to walk, craw and stand, it can definitely save him/her from multiple bumps and bruises. Also suit for daily indoor outdoor use.(Not suit for biking) ❤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 protective hat,baby also need to be taken care by adult. ❤IULONEE is committed to satisfy 100% customers with excellent products and service.