40-55 size 36 * (size S)* 55-65 size 38 * (size m)* 65-70 size 40 * (size L)* 70-75 size 42 * (size xl)* 75-80 size 44 * (size 2xl)* 80-85 size 46 * (size 3xl)* 85-90 size 48 * (size 4xl)* 95-100 size 50 * (size 5xl)* 105-115 size 52 * (size 5xl)* 120 -130 54 size * (5xl size)* The fabric is a 2 thread cotton seasonal combed cotton fabric. It never leaves any knee marks - it does not shrink as long as you wash it at the degree stated on the label. We have not received any complaints regarding these. It is not lycra but it is flexible. Upper length 95 cm, lower length 105 cm