Navy 

lD : Floor-to-knee length (measurement taken below the popliteal fossa, posterior aspect) lK : Floor-to-crotch length  cB : Ankle circumference (at narrowest point)  cC : Calf circumference (at widest point)  cG : Thigh circumference (at widest point)  cH : Hip circumference  cT : Waist circumference    Size Ankle circumference (cB) Calf circumference (to the widest part) (cC) Size 1 19 cm - 21 cm 30 cm - 35 cm Size 2 21 cm - 24 cm 32 cm - 38 cm Size 3 24 cm - 26 cm 34 cm - 42 cm Size 4 26 cm - 29 cm 37 cm - 46 cm   Height Height Floor / Under the knee (popliteal fossa) (lD) Normal 37 cm - 40 cm Long 40 cm - 45 cm