éRelaxSan support knee high socks without heel with light graduated compression of 10-15 mmHg. For energised healthy legs, they improve blood circulation, reduce ankle swelling, and prevent varicose veins. These support knee highs are also Ideal during pregnancy in order to soothe tired and aching legs. They feature reinforced toes. Fabric content: 83% nylon, 17% elastane Size guide: Size 1: Ankle Girt: cm 18-20,5 (in 7-8) Size 2: Ankle Girt: cm 20,5-23 (in 8-9) Size 3: Ankle Girt: cm 23-25,5 (in 9-10) Size 4: Ankle Girt: cm 25,5-28 (in 10-11) Size 5: Ankle Girt: cm 28-30,5 (in 11-12)é