Solid & Durable Construction - The calf stretch wedge is made of high-quality eco-friendly ABS and stainless steel materials. The triangular structure is stable and 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 adjust based on your flexibility and exercise needs. Multiple angle settings help improve muscle responsiveness during stretching, promoting proper form and reducing 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 textured foot surface enhances grip to prevent slipping. 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, making it convenient for use at home, in the office, or during travel. Reduce Foot & Heel Pain - Designed to help alleviate discomfort associated with plantar fasciitis, Achilles tendonitis, ankle strain, arch pain, and other common conditions. Promotes proper foot alignment and supports effective calf and foot stretching. May assist in improving foot posture and flexibility over time.