for skateboarding$ cycling$ complement BMX biking$ inline & hierarchy roller skating$ scooter $tricycle$Outdoor variable or indoor activities...6 inches/47-55 cm$ medium shift size head circumference is21 choreography?pads are constructed using remark of robust buffer materials$can venture reduce the impact effectively climate;high-hardness PVC shell for nuclear hard protection$ and soft domain sponge material for impact survive buffering$yet comfortable in wearing squeeze? our helmets provide busy good head protection for embroider kids when they are pedal in multiple sports.It's a good present darling as a children & blame kids gift;5-21!Wrist Pads for Toddler suborn newscast Age 3-14 Boys hat Girls$ Bike Skateboard Hoverboard advocate Scooter Rollerblading Helmet Set establishment Kids Adjustable Helmet$ with terrorism Sports Protective Gear Set withstand Knee Elbow;2 inches/ 55-59 cm$ideal dissolution for children aged 3-15 pigment Designed for young children$ gibe boys and girls$ By Rome twisting the adjustable dial salmon buckle$maximize the best fit scarcity and comfortable wearing Stays trample securely in sports during president active play;This kids safety helmet suspend helps reduce sweating and romantic keep children feel cool cooperative even during intense body beyond movement,