Thermal Neoprene Swim Cap — size guide
Thermal Neoprene Swim Cap — size guide
Use the chart attached to this exact SUMARPO model. Sizes below match this product’s size options; stock availability is shown in the product selector.
| Size | Head circumference (cm) | Head circumference (in) |
|---|---|---|
| S/M | 55-57 | 21-22 |
| M/L | 57+ | 22+ |
Measurements are reproduced as supplied, not converted or expanded. Source: SUMARPO product-specific size chart. Checked October 23, 2026.