Our One-Piece squat wedge block are designed by sports experts based on the user's training habits. It can be used for All-Position squat training, Knees Over Toes, weightlifting, heel raises, lunges, calf stretches, balance training, flexibility training, warm-up, ankle joint activities and physical therapy, etc., and protect your back and knees from injury.Specifications: 27"x10"x2.7"Material: Cross-linked polyethyleneWarranty: 5 years