Weighted Straw Sippy Cup with Strap, Spill Proof Sippy Cups, Trainer Cup for Toddlers, Water Bottle for Baby 6 Months with 2 Type of Spout, 10oz/300ml, Blue

• All materials of sippy cups are BPA free. The cup body is made of Tritan, the lid is made of PP, the straw is made of food grade silicone, and the gravity ball is made of PP and stainless steel. • There are air holes on the top of the cup lid, which can keep the air pressure inside and outside the cup balanced when the baby is drinking water, preventing stomach colic. • there is a V-shaped valve inside the straw, which can effectively prevent the water in the cup from overflowing due to high air pressure. • Straw cup comes with a strap, which can be adjusted according to the baby's height, and the adjustable range of the strap is 10.43 to 48.23 inches. • thanks to the V-shaped nozzle, the water in the cup will not leak even if it is turned upside down. Warm tip. the baby needs to bite the valve gently to out the water.