Material Safety: The helmet uses a sturdy ABS shell and shock-absorbing foam interior. which can absorb external pressure during sports activities and reduce the risk of injury to children during sports. The helmet liner is made of a soft material. which prevents the growth of bacteria and reduces unpleasant odors caused by perspiration. without snagging the hair. Vivid cartoon design: the top of the helmet is decorated with attractive colors and cute 3D cartoon animal style printing that will make your child love them at the first time . Every child will find something for themselves. boys and girls. More protection: This four-season helmet has a hidden zipper to install a warm bib and install a bib in cold weather to keep warm and windproof. The length of the sun visor is optional. and there are brown lenses and transparent lenses. which you can buy according to your needs. The lens can protect face and eyes from sun and wind. provide better protection for children. Suitable various sports: The shape and size of each child's head is slightly different. The size of the helmet is 46-52 cm (18.11-20.47 inches). suitable for children aged 2 to 12 years. A useful accessory that can be used in many outdoor activities. such as roller skating. skateboarding. scooters. cycling. the roller skate. the long plank. the two-wheeled electronic board and the hoverboards to protect your children. Service & GuaranteeWe will do our best to provide our customers with satisfactory products and services. You have questions and we will answer you within 24 hours. The warranty period is 12 months. If you are satisfied with our products. we would be very glad if you give us a detailed comment and feedback and that is a great help for our business. we will thank you for your encouragement.