1. Cartoon backpack design, airtight, round and smooth 2. Pull the jet, push and pull, exercise the baby hand muscles 3. 5-8 meters long range, full of jet power 4. Thickened waterproof ring, built-in rubber ring at the bottom interface, sealed and watertight 5. The elasticity is adjustable, the arms are not stretched, and can be adjusted freely according to the baby body shape, and the baby wears zero restraint 7. Small body, large capacity, in line with the baby weight-bearing range, no need to add water frequently 8. Top vent cap to keep water flowing smoothly 9. Material: ABS 10. Backpack capacity: 1500-1800ML 11. Dimensions: shiba inu: 20 x 22cm, cat: 20 x 22cm, tiger: 20 x 25cm, pink pig: 20 x 25cm, police car: 23 x 25cm, train: 24 x 22cm, excavator: 26 x 22cm, dinosaur: 26 x 22cm, rainbow: 24 x 23cm, astronaut: 24 x 23cm