Solid & Durable Construction - The calf stretch wedge is made of high-quality eco-friendly ABS and stainless steel materials, with a stable triangular structure that can support up to 330 lbs without shaking or deforming. This ankle stretching board is ergonomically designed and serves as a popular alternative to heavy wooden models. 4 Angles Adjustment & Portable - This inclined stretching board features 4 adjustable angles: 20°, 30°, 40°, and 45°, allowing you to customize the incline based on your needs. Multiple angle options help increase muscle sensitivity during exercise, promote proper stretching, and reduce the risk of injury. Anti-slip Design - Non-slip rubber on the bottom ensures stability on various surfaces, preventing the board from sliding during use. The raised heel plate secures the heel in place, while non-slip treads keep feet from slipping during stretching exercises. Easy to Use and Carry - No assembly required. Simply adjust to your desired angle and step onto the board to begin stretching. The slant board is lightweight and collapsible, measuring less than 2 inches when folded, making it convenient for use at home, in the office, or during travel. Reduce Foot & Heel Pain - Helps relieve foot and heel pain associated with plantar fasciitis, Achilles tendonitis, ankle strain, arch pain, and other common conditions. Promotes proper foot alignment and supports effective stretching. May assist in improving conditions related to flat feet, high arches, and posture imbalances.