XS 75 (Stretchable 75 cm - 80 cm) 30 (Stretchable 30 cm - 31 cm) SMALL 80 (Stretchable 80 cm - 85 cm) 32 (Stretchable 32 cm - 34 cm) MEDIUM 90 (Stretchable 90 cm - 95 cm) 36 (Stretchable 36 cm - 38 cm) 1.0 (Stretchable 1.0 m - 1.05 m) LARGE 40 (Stretchable 40 cm - 42 cm) 1.1 (Stretchable 1.1 m - 1.15 m) XL 44 (Stretchable 44 cm - 46 cm)