1. READY TO USE: No assembly required. Simply adjust to your desired angle, gradually set up the calf stretcher, and you can perform exercises like stretching. It features a time function, allowing you to set your preferred stretching duration. 2. STABLE CONSTRUCTION: The adjustable calf stretching wedge is made of quality PP, rubber, and other materials. Its triangular structure ensures stability without wobbling or deforming. This ankle stretcher is ergonomically designed. 3. PORTABLE: This calf slant board is flexible and can be used in the office as well as for indoor and outdoor sports. This sports slant board is foldable and easy to transport. 4. NONSLIP MASSAGE: The nonslip rubber on the bottom of the slant board ensures it stays in place on any surface during use. The foot stretcher features a raised heel plate to keep the heel secure, while the textured bumps provide antislip grip and a massage effect.