Truly one of its kind, a sneaker that is fully innovative in nature - the Shunya Wooler is 100% leather-free, 99% plastic-free, and wool-full – of course! Materials - Upper: 100% Burel Wool from Swiss Blacknose (white version) or Portuguese Sheep (black version) ethically sourced + MIRUM® a plant-based leather-like material containing no synthetics or plastic components Inner Lining: 100% Wool Burel Strobel Material: Eucalyptus Tencel™ fiber + PLA of vegetable origin, 100% biodegradable and FSC-certified Padding: 100% Wool felted Sewing thread: Lyocell Tencel™ Reinforcement: Cotton OEKO-TEX® + Natural latex Adhesive: Water based synthetic glue (where lie the residual 1% plastic of our 99% plastic-free sneaker) Insole: Sisal fiber + Natural latex foam + 100% Burel felted Wool Laces: 30% Cotton OEKO-TEX® + 70% Natural latex elastic Sole: PLIANT® 100% biobased from natural rubber with plant and mineral pigments. Quality - Developed after two years of research and development in collaboration with sustainable shoe design pioneer Sven Segal and Baabuk's network of suppliers. Produced in Portugal. Care - We recommend hand washing with natural soaps. If using a washing machine, choose a gentle cycle at 30°C with only natural soap (no detergents or chemicals). Remove the insole before washing. Air dry. Because there is no plastic in our laces, resizing them can be a bit challenging - therefore if you want to shorten the laces, be aware it will fray after being cut. You can also add a drop of transparent Nail polish or glue at the tip to stop the fray. Specs - Heel drop 6mm, Arch height low/medium, Ankle collar height 5cm