Rubber sole Easy on/off, hands-free, slip-on style with a low heel collar Hygroscopicity Permeability:These slippers are made of high-quality and superior cotton-blend texture, combined with Waffle knit upper design lets your foot breathe , keeping your slipper sweat and odor-free Ultimate Comfort:The memory foam insole makes these slippers soft and flexible, let your every step like walking on the cloud. offers lasting marshmallow-like comfort and warmth for tired toes and heels, reduces muscle fatigue, relieves pain and pressure after a long day hard work. Non-slip and Durable:Sturdy rubber sole lets you step outside the house to fetch the mail or walk the dog; anti-slip waterproof bottom grips the floor to keep you safe on wet tiles. Machine washable for easy care. Multifunction:Easy slip on style with a soft memory foam insole and durable non slip rubber sole make these slippers to be a a good option as house slippers, bedroom slippers, winter slippers and indoor outdoor slippers for your daily wear. A great gift to pamper your tired feet with a well deserved rest.