This adjustable slant board enhances flexibility and calf stretching with four tilt angles, simple maintenance, and a lightweight, portable design. Made from waterproof, odorless PP foam, it offers a safe, sturdy surface for leg stretches at home, in the gym, or in rehab settings. Four adjustable angles to target different muscle groups and progress flexibility gradually. Easy maintenance: wipe with a cloth or rinse with water to restore shine quickly. Portable and easy to store: lightweight, usable standalone or stacked with other boards, ideal for home or on the go for people of all skill levels. Durable PP foam material: waterproof, odorless, and long lasting for regular use. Usage scenarios: Warm up before running or cycling by using a moderate angle to stretch calves, hamstrings, and ankles. Cool down or rehab after workouts with a lower angle to reduce tension and improve range of motion. Daily mobility and balance work during desk breaks or light training sessions.