Made of sponge and nylon materials for wear resistance, durability, and a lightweight design. Key benefits Stabilizes the bike for indoor training: lift the front wheel gently and place the bike rack under the front wheel to secure the bike during indoor sessions. Floor protection: helps prevent damage to floors from bike movement and trainer use. Broad compatibility: suitable for most road and mountain bike tire widths. Lightweight and durable: designed for repeated use without adding significant weight. Specifications and features Material: sponge and nylon construction for cushioning and wear resistance Function: frontwheel stabilization rack for indoor training Compatibility: fits a wide range of road and mountain bike tire widths Performance: provides secure support while minimizing floor damage 23 practical use scenarios Indoor trainer workouts at home: install the frontwheel rack under the wheel to keep the bike steady during pedaling. Home gym floor protection: use during indoor cycling to prevent scuffs and scratches on the flooring. Shared gym or workshop use: quickly set up on different bikes by placing the rack under the front wheel for stable maintenance or warmups. Notes Simple setup: gently lift the front wheel and position the rack to stabilize the bike. Designed to be durable and lightweight for regular use.