The Bell Sidetrack Child Helmet is designed for 5 year olds and up, the Sidetrack Child features Bells all-mountain shape with lower coverage on the rear of the head - similar to the Stoker adult helmet - in a pint-sized package for little rippers. The ready-for-action style, complete with a cool visor, gets young riders motivated to ride. The comfortable, secure ErgoDial fit system makes it quick and easy to get them going. Bell Sidetrack Child Helmet Features SIZE UNIVERSAL CHILD - FITS 47 - 54CM ErgoDial™ Fit System In-Mold Polycarbonate Shell PinchGuard™ Buckle Snap-In Visor WEIGHT: 291 Grams VENTS: 15 CERTIFICATION: CE EN1078 CPSC Bicycle