Made with 100% organically sourced cotton blend. These grip socks are going to be most stretchy, softest and prettiest you have ever worn that complement our range of apparel & accessories. Each sock has been carefully hand stitched and stretch tested to make sure they stay on your feet through your hardest of pilates reformer & yoga mat workouts. The highest quality silicone nonslip pads on the base of the socks will provide you with the strongest grip either on the floor or on our reformer mats