A toasty TEX Winter sneaker – lined with 100% natural wool lining, keeping little feet warm and dry during the coldest months. The soles on the smaller sizes are especially designed to be softer and more flexible than the larger sizes. Two velcro straps ensure easy closure and keep the design minimal. These are not only intended for the little ones but are very popular with the older children. Sustainability: The TEX Membrane is 100% recyclable and is free from two chemicals; PTFE & PFC. PTFE is claimed to be a cause of birth defects. PFC has been proved to be associated with developmental delays in the fetus and child, including possible changes in growth, learning, behavior and decreased fertility. All shoes are hand-made in 100% ecological, 100% vegetable tanned, 100% biodegradable and 100% chrome-free leathers and suedes. The shoe has an ecological, chrome-free insole lining and a soft, flexible rubber sole made of lightweight recycled TR rubber.