Size 26, inner length about 16.5cm

Size 27, inner length about 17cm

Size 28, inner length approximately 17.8cm

Size 29, inner length about 18.5cm

Size 30, inner length about 19cm

Size 31, inner length 19.5cm

Size 32, inner length 20cm

Size 33, inner length 20.7cm

Size 34, inner length about 21.5cm

Size 35, inner length about 22cm

Size 36, inner length about 22.5cm

Size 37, inner length about 23cm

26-30 yards (5 pairs)

Size 31-37 (7 pairs)