Designed specifically for those with common foot problems. The Vionic Carlin is a casual women's flannel mule style slipper with an adjustable hook and loop closure and orthotic footbed.These Vionic Carlin Light Grey Flannel Women's Slippers have the following features: Soft, flannel textile upper and footbed Specifically designed for those with orthotic problems like plantar fasciitis Adjustable hook-and-loop closure strap TPR outsole with a wave-patterned tread, designed for indoor use Vionic recommend wearing your new footwear for just a few hours for the first few days, allowing your feet to adjust to the orthotic comfort and support If you are a half size, we recommend ordering the nearest size down. 10011458