Measure your chest circumference at the widest point, under your armpits and around your back. Then choose the matching size. A vest should fit snugly without squeezing.
Men (Duro 6, Duro Pro 10)
| Size | Chest circumference |
|---|---|
| S | 88 - 94 cm |
| M | 94 - 108 cm |
| L | 108 - 118 cm |
Women (Dyna 6, Dyna Pro 10)
| Size | Chest circumference |
|---|---|
| S | 80 - 89 cm |
| M | 89 - 98 cm |
| L | 98 - 108 cm |