Nooks Design felted wool booties are made from 100% pure New Zealand lambswool which has been felted for strength and durability, and paired with rugged hide leather soles that provide slip resistance on laminate, hardwood or tiled surfaces. The adjustable flap closure makes them easy to put on and a built-in elastic in the ankle cuff holds them gently in place. Our booties are ideal indoor shoes and are also durable enough to be used outdoors in dry conditions.