How to use: Just slip your feet into the sandals, and you're ready to go. They're great for casual walks, post - workout recovery, or just relaxing around the house. Attention: Avoid wearing these sandals in extremely rough or sharp - edged environments as it may damage the OOfoam™ material. Maintenance advice: You can simply throw them in the washing machine on a gentle cycle to keep them clean. After washing, let them air dry. This will help maintain their shape and performance, and keep the odor at bay.