Unisex indoor slipper booties made of 100% natural Australian merino wool with leather soles (not suitable for outdoors). Yeti booties have an insole made of a cushioned layer of wool for better insulation from the ground. Light-weight and fluffy, keeping your feet warm - great for slouching around in. Read the product description below to learn about sizing and how to try Woolsies Yeti on. Insulating thanks to wool's effectiveness in absorbing and releasing water vapour in the air - different from the blocking quality of synthetic fabrics. Breathable thanks to wool's reaction to body temperature, making them odour-resistant. Relaxed bootie style (ca. 22cm high) with wool's natural tendency to adjust to feet's width for your comfort. Roomy inside and featuring a rounded toe, they are ideal for standard and wider feet.