EVA Plastic soleSANDALS DESIGNED FOR THE HEALTH OF YOUR FEET: Take time to wear the Cheeks Massage Sandal and your feet will thank you. Try them on and you will feel the difference since Happy Feet are Healthy Feet! Massaging Sandals, that are comfortable and functional; a shoe that massages your feet with every step you take.SHOES WITH BENEFITS: Tony Little, America??s Personal Trainer, has specifically crafted these sandals to be your new favorites ?C throw out those flimsy flip flops and try the Cheeks Massage Sandals! Easy to slip on, the toe grip bar in this one-piece design helps prevent the foot from pushing too far forward while flexing the foot. This sandal has it all with soft gel massage insoles that move when you move!WHERE FASHION MEETS WELLNESS: Tony Little isn??t just a fitness icon; he has created a footwear line that is as functional as it is fashionable. These sandals are perfect for indoor or outdoor functions and make a casual yet sporty fashion statement all while massaging the feet. ??Oh Feels So Good!??SMART DESIGN: Made of waterproof, scuff proof, low impact EVA plastic, these sandals are lightweight and low impact. The soft gel massage insole provides added comfort for your entire foot. Cheeks Massage Sandals by Tony Little are designed with a patented footbed technology using a Foot Cradle Design for a secure fit with a treaded sole to help keep the foot stable and in place. They are durable, floatable and can be easily cleaned.