Our newly added Twist Fit system provides dual-direction ratcheting adjustment, for a more custom fit without having to mess with changing liners. We also added a magnetic Fid-Lock buckle which is easier to use for little fingers and eliminates those pesky neck pinches. Available in 2 sizes from 47cm-54cm with 2 sets of pads for a more custom fit. SHELL • High-Impact ABS LINER • EPS VENTS • 11 Open Vents INTERIOR • Heat-Sealed Premium Pads FIT • 2 sizes - Youth Small (YS), Youth Medium (YM) CERTIFICATIONS • ASTM 1492/1447, CPSC 1203, AS/NZS 2063:2008, CE 1078