Feature:Design for 4-11 years children: Adjustable helmet head circumference: 50-54cm/19.6-21inch,Please according to head circumference and child's weight and age chooseIMPACT RESISTANT: Helmet use ABS outer shellhigh-density EPS inner shell, thickened soft sponge, comfortable and durable. Protective gear Made of tough and durable PP, PE materials with breathable Polyester sleeves,these make child enjoy the sports experiences with safety protection to their head knee elbow and wrist.Adjustable protective gear:The adjustable straps and nylon button could be flexible to different sizes of knee elbow and wrist, the knee pads elbow pads with wrist guards could offer custom flexibility according to the user desire.Good gift for child: It is a good choice as a gift for Children's Day, Christmas, Birthday,etcAppropriate for inline skating /skateboard /riding bikes/ scooters / riding a scooter and other extreme sports.Specification:Material: Helmet: ABS outer shellhigh-density EPS Inner; Pads: NylonPEVelvetColor: As the picture showSize: Helmet: 50cm-54cm Head Circumference, fit for 4-11 years old kids; Quantity: 1set 7pcsSeason:SummerApplicable People:ChildAge:3 YearsPackage List:1 x Helmet2 x Elbow Pads2 x Palm Pads2 x Knee Pads