FINE DESIGN: It can provide stable support for training because the base has a valve for introducing sand or water to add weight, and the small ring on the side for hanging the tape, the concave part for placing the tennis ball, convenient and practical to use. EASY TO USE: Easy to use and convenient for training without ball picking. It's light and portable, and helpful for one person to practice with. It could also improve your concentration, athletic skills, hand and eye coordination, and develop the interests of the sport. PERFECT GIFT: A great gift for your friends, family members and kids who love to play tennis. It can help improve your stroke action, footwork, and punching power Precision control, tennis skills, suitable for many places like garden, park, etc. Package includes: 1 x trainer base, 2 x training balls. Precision control, tennis skills, suitable for many places like garden, park, etc. Product s The tennis ball back base trainer is made of high quality plastic, is robust and durable. The bonus rubber rope is highly elastic and wearable with an exquisite design and fine workmanship. The addition of 2 large area non-slip EVA on the bottom has an excellent cushioning effect. The ergonomically shaped handle makes it more convenient and convenient to carry. Imitation tennis design, perfect fit for tennis. Great gift for your friends, family members, and kids who love to play tennis. Specifications: Material: plastic + rubber Specifications: Article: Tennis Trainer Material: plastic and rubber Color available: Blue A, Blue B, Orange, Green Package included: 1 x Tennis Trainer Base 2 x balls with rope