PPSU material: This product is made of PPSU. The color of PPSU is light yellow and has the characteristics of BPA free, strong molecular stability and high temperature resistance. Compared with the bottle made of PP, the PPSU baby bottle is more sturdy, will not be broken after several falls, and can withstand repeated high temperature sterilization for a long time. | 2 types of nipples: Spout type is suitable for babies aged 6-12 months. The spout is soft, and the water outlet method is similar to that of a pacifier, which can help the baby transition to the straw cup. Straw type is suitable for babies over 12 months, specially designed for babies in the oral stage, babies can drink water while biting the straw. | Drink at ease: The bottle cap adopts 4 layers of anti-seepage design, even if the bottle is inverted, it will not leak. With a gravity ball at the end of the straw, baby can easily drink water while lying down. Fold the lid to 180 degrees to fix the lid position (you can hear a clack), never ever worry about the lid sliding down and hitting the baby's nose. | Clear & Cute: There are two scale indications（oz&ml） on the bottle, you can clearly see how much water your baby has drunk. There are also 5 different animal patterns on the bottle cap, which can be changed with the turning of the handle. A cute way for baby to learn to feel the world. | Colorful & Suitable: POTATO has found through research that pink, blue and green are the three favorite colors of babies. We choose these three colors for the straw cup to meet the baby's pursuit. And 2 type capacities (200ml/7oz and 300ml/10oz) are great to meet the needs of outdoor, school or home use.