New and innovative Smart Tights eco-friendly knee highs which help to keep the world a cleaner place! WHAT ARE SMART TIGHTS KNEE-HIGHS? SMART TIGHTS are made of biodegradable yarn, which decomposes 80% faster than regular knee highs. These knee high socks will decompose in a landfill within 3 years, while regular tights take up to 60-80 years to decompose! Let's keep the planet cleaner together with SMART TIGHTS! Smart Tights are OEKO-TEX® certified, made with Amni Soul Eco® yarn, which meets the ASTM D5511 standard. Colour: black Composition: 85% polyamide, 15% elastane 30DEN Designed in Estonia Produced in Italy