Black Diamond Helmets
Vector Sizing
| S/M | M/L | |
| Size Range | 53-59 cm | 58-63 cm |
| Weight | 230 g | 245 g |
How to measure:
Head: Measure around the largest part of the head - about one inch above the eyebrows.
Vapour Sizing
| S/M | M/L | |
| Size Range | 53-59 cm | 58-63 cm |
| Weight | 188 g | 199 g |
Half Dome Sizing
| S/M | M/L | ||
| Size Range | 48-57 cm |
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| Weight | 310 g | 340 g |