Keep. According to the query of Keep official website, Keep kneepads are products of Keep. KEEP has scientific design, double-sided spring steel bars, X-shaped design and non-slip silicone to protect knees. Its two sides are steel spring pieces, which can strongly support the knee joint and make running and walking easier. Keep is an intelligent fitness platform launched by Beijing Calorie Technology Co., Ltd. on 20 15, and its founder is Wang Ning. The platform provides sports-related products such as online sports courses, intelligent fitness hardware and sports consumer goods.