One Pair Wood Gym Rings Teens or Adults Gym Rings(No Straps) (Betula wood)Merits of the gym rings training : 1. Help exercise the whole body muscle. 2. Help alleviate physical fatigue. 3. Help children and teenagers grow taller. ATTENTION: 1. Generally,we will send out the product in 2 or 3 days after you place an order. 2. And after shipment, the ..