Using these Skechers GO WALK Flex slip-ins is a breeze. Just slip them on and you're ready to go for a walk or engage in cross - training activities. When using them, make sure your feet are clean and dry to get the most out of the cushioned insole. For maintenance, you can simply throw them in the washing machine as they're machine washable. However, avoid using harsh detergents that might damage the materials. Also, don't put them in the dryer at high heat; instead, let them air - dry. Keep them in a cool, dry place when not in use to maintain their shape and quality.