Stretchy and tight fabric make these leggings perfect for training and casual wear. COMFIEST LEGGINGS EVER!! Are perfect for every body type. Made of 85% nylon and 15% spandex. Our Model wears a Size S How to Measure Chest - With arms by side, measure around the fullest part of chest. Waist - Measure around waist at navel. Hip - Measure around the fullest part of the buttocks. Kids Sizing Chart (8-16 Years) Size (Kids) Chest Waist Hip XXXS 8 62 cm 57 cm 62 cm XXS 10 68 cm 61 cm 70 cm XS 12 / Ladies 6 74 cm 66 cm 76 cm S 14 / Ladies 8 80 cm 69 cm 82 cm M 16 / Ladies 10 86 cm 72 cm 86 cm Ladies Sizing Chart (14 + Years) Size (Ladies) Chest Waist Hip XXS 4 68 cm 61 cm 70 cm XS 6 74 cm 66 cm 76 cm S 8 80 cm 69 cm 82 cm M 10 86 cm 72 cm 86 cm L 12 92 cm 76 cm 92 cm