Sanuk Women's Yoga Gemini (1131613) toe post sandals have three synthetic straps and synthetic lining. A thin toe post strap between the big toe extends to connect to a middle strap going over the top of the foot. An adjustable heel strap connects to the middle strap connected to comfortable anatomical yoga mat footbeds with arch support. Feel good about wearing these Sanuks, they're vegan and made of recycled materials. Easy to pack and great for bringing along on trips and wearing around town and at the beach. Machine wash on cold with color safe detergent. Allow them to air dry. Do not put them in the dryer.