82% Nylon; 18% Spandex DEEP KNEADING SHIATSU – Enjoy a deep kneading shiatsu foot massage from your heels to your toes, taking the stresses of a hard day away from your feet AIR COMPRESSION MASSAGE: Rhythmic air compression gently squeezes the feet for ultimate relaxation after a long day SOOTHING HEAT – Enhance your massage with the additional heat feature that can be used individually or in conjunction to the massage to help relieve achy foot muscles CUSTOM COMFORT: Choose from air, kneading or a combination of these with or without heat, plus a choice of low, medium, or high intensity FITS MOST - The HoMedics Shiatsu Air 2.0 Foot Massager fits up to a Mens size 14 foot. Removable washable liner makes it easy to clean and maintain freshness