A kickstand is a support device used primarily on bicycles to hold the bike upright when it is not in use. It typically consists of a metal arm that can be folded down to the ground, providing stability. When the kickstand is engaged, it allows the bike to stand without needing to lean against a wall or other object. Kickstands come in various designs, including single-leg and double-leg options. The single-leg kickstand is more common and lightweight, while the double-leg version offers greater stability, especially for heavier bikes. Properly using a kickstand helps prevent damage to the bike and keeps it secure.