Zox Alto DDV Piston Half Helmet - Sizing
Zox Adult Helmets
| XXS |
51 - 52 |
63/8 - 6½ |
20 - 20½ |
| XS |
53 - 54 |
65/8 - 6¾ |
207/8 - 21¼ |
| S |
55 - 56 |
67/8 - 7 |
215/8 - 22 |
| M |
57 - 58 |
71/8 - 7¼ |
22½ - 227/8 |
| L |
59 - 60 |
73/8 - 7½ |
23¼ - 235/8 |
| XL |
61 - 62 |
75/8 - 7¾ |
24 - 243/8 |
| XXL |
63 - 64 |
77/8 - 8 |
24¾ - 25¼ |
| 3XL |
65 - 66 |
81/8 - 8¼ |
255/8 - 26 |
| 4XL |
67 - 68 |
83/8 - 8½ |
263/8 - 26¾ |
| 5XL |
69 - 70 |
85/8 - 8¾ |
271/8 - 27½ |
General Sizing information
If you are unsure about your size, compare your body measurements to the charts provided to determine the correct fit. These charts will give you a good idea of the size to order, but be sure to read special sizing information that may accompany an item description. Some merchandise dimensions may vary from the averages charted here.
Helmets
Measure the largest portion of your head horizontally with a cloth tape, measuring approximately one inch above your eyebrows and ears. If your head size is between two helmet sizes, first try the smaller size. A correctly fitting helmet should not be able to move from side to side and up and down with the chinstrap fastened for a safe fit. If it is not snug, try a size smaller. Consider purchasing other size cheek pads or helmet liners to improve fit. Some helmets are designed with exchangeable cheek pads and liners; allowing smaller cheek pads or liners, in a slightly larger helmet or vice versa.