DescriptionOur product is made of premium silicone material, and is durable and supple. Press the grip directly to control the back of the adult, and control the force. Perfect for adults, elderly, patients with apoplectic hemiplegia, for helping secretion or phlegm come out easily.Features-Color: Violet -Material: Silicone -Size: 10.10X10.10X6.50cm/ 3.97X3.97X2.55inch -Hollow arc, uniform stress, in line with ergonomics, deep vibration, easy to burp. -Drum pressure beat burp, rapid exhaust, produce drum pressure, promote exhaust. -Convex grip can promote rapid exhaust, and air vibration will be produced when slapping, which can promote rapid exhaust. -Press the grip to control the back of the adult, and control the force. -An item for helping secretion or phlegm come out easily. Perfect for elderly, patients with apoplectic hemiplegia.