Features: This product has a rope on the top, which can be swayed up and down on the fingers and tapped. There is a small hole at the bottom for piercing the plastic pipe. Tie the trachea through, blow the ball bigger, and the product is installed. Size S: Comes with a blowing tube, the ball can be blown up to 30 to 40 cm in size. Size M: Comes with a blow tube, the ball can be blown 40 to 50 cm in size. Size L: Comes with a blowing tube, the ball can be blown up to 60 to 70 cm in size. Size XL: No blowpipe is attached. An inflator or automatic air pump is required. It can be blown up to about 1 meter to 1 meter 2 in size. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: TPR Battery: No Color/Style: As the picture shown Weight: 30/45/80/400g Package List: 1 x Elastic Blowing Bubble Ball