Knee guards are protective gear designed to shield the knees from injuries during physical activities. They are commonly used in sports like basketball, football, and skateboarding, where falls or impacts can occur. Made from materials like foam, plastic, or fabric, knee guards help absorb shock and provide support to the knee joint. These guards come in various styles, including padded sleeves and hard-shell designs, catering to different levels of protection and comfort. Wearing knee guards can reduce the risk of injuries such as sprains, strains, and bruises, making them a valuable accessory for athletes and active individuals.