Usage Tips:UNIQUE DESIGN - The squat platform consists of 3 incline plates, two 8.5 incline foam incline plates and one 17 incline foam incline plate. The stacked design can form a pair of 8.5 squat incline plates or a pair of 17 squat incline plates. AND STURDY MATERIAL - The Yoga Wedge Stretch Slant Boards for calf stretching are made of EPP environmental friendly material, non-toxic, odorless and waterproof. The foam wedge can withstand up to 440 lbs. - made for heavy lifting and strong pressure MULTI-SCENE USE: Slant board for calf stretching for home, office, gym or doing yoga,stretch and strengthen the feet and calvesSquat Wedge Block helps to make your muscles more sensitive during exercise,improve lower leg strength. LIGHTWEIGHT & EASY TO TRANSPORT - The solid squat platform is lightweight and easy to carry Take outdoors, or to the Gym International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.