DOT approved ATV helmet with visor Helmet Sizing Helmet Size Inches Hat Size Metric X Small 20 7/8 - 21 1/4 6 1/2 - 6 3/4 53 - 54 Small 21 5/8 - 22 6 7/8 - 7 55 - 56 Medium 22 3/8 - 22 3/4 7 1/8 - 7 1/4 57 - 58 Large 23 1/8 - 23 5/8 7 3/8 - 7 1/2 59 - 60 X Large 24 - 24 3/8 7 5/8 - 7 3/4 61 - 62 XX Large 24 3/4 - 25 1/8 7 7/8 - 8 63 - 64   Helmet Open-faced helmet with visor and assorted sizes and colors. $ 39.95 Go Kart Shoulder and Lap Seat Belt Go Kart Shoulder and Lap Seat Belt $ 44.95