Rubber sole BEST HOUSE SHOES – Classic loafer style in woolen cloth upper and lined with soft plush fleece which keep your feet toasty and comfy. The closed back heel with adjustable elastic design perfectly combines the safety and fit of an outdoor shoe with the comfort of a slipper. CUSHIONING & SUPPORT – High density 100D memory foam cushions your every step and feels like ergonomic pillows under your feet. Supportive insole relaxes your arch and soothes common foot pains (e.g. plantar fasciitis) from all-day walking or standing. NON SLIP RUBBER SOLE – Durable rubber sport sole provides waterproof and non skid traction. So you can wear them freely at home in living room or bedroom. You can also step outside the house to fetch the morning paper or check the mailbox without switching shoes. MACHINE WASHABLE – Available in 3 colors, gentlemanlike light gray, sagacious dark gray and deep coffee, perfect for men of all ages and lifestyles. These closed toe scuffs are also machine washable, which makes caring for them easily. They are great gifts for boyfriend, husband, daddy or son. SIZING TIP – These casual slipper boots come in 4 sizes (size 7-8, 9-10, 11-12, 13-14) could fit most standard and wide feet. If you are between sizes (such as size 10.5, 12.5, etc.), please get the next size up. May feel snug at first due to the memory foam, allow the insole to compress a bit and they will fit better.