Ultra-sheer Seamed sandal toe Lycra soft elastane band at top Philippe Matignon"s Comfort 20 MI BAS is a great knee high that can be used under dress trousers or regular pants. Lycra soft elastane top bands limit it"s movement without digging into your legs. Instead, it forces the ultra sheer knee high to stay in place all day. Philippe Matignon designed hosiery perfection and called it the Comfort 20 MI BAS, try it for yourself! Materials: 86% polyamide, 14% elastane.