| Size | Measurements & guidance |
|---|---|
| S | 28.5 × 20.5 cm | Neck circumference: 15–20 cm | Depth: 9 cm |
| M | 38 × 27 cm | Neck circumference: 20–26 cm | Depth: 12 cm |
| L | 46 × 32 cm | Neck circumference: 26–30 cm | Depth: 15 cm |
| XL | 57 × 39.5 cm | Neck circumference: 30–39 cm | Depth: 18 cm |