AFX FX-90 Unisex-Adult Full-Face-Helmet-Style Helmet (Frost Gray, X-Small) Lightweight Composite poly-alloy shell Fully removable liner and cheek pads Flush-fit optically correct compound-curved shield Seven-point high-flow ventilation D-Ring with chin strap holder (54-55cm 6 3/4 - 6 7/8 hat 21 1/4" - 21 5/8")