Quality Materials: Xuanda brand nursing bottle are made of high-quality PP material,BPA-free, the cap is well sealed and will not leak, the scale is clear, could better control over the amount of milk, it is heat and cold resistant, so it can be safely stored in the refrigerator or heated. 3 Styles Nipples: Small/Middle/Large size meet different newborn pet feeding needs, designed by a professional veterinarian, mimics the shape of a pet mother's pacifier, made of food grade silicone, soft and safe, resistant to tearing and biting, all nursing nipples are pre-made 1mm small hole, do not need to cut the nipple. Regulating Valve: The side of nipple has intelligent pressure regulating valve, balance internal and external pressure, milk and air separation, to avoid the kitten or puppy breathing too much air caused by colic flatulence, and newly designed larger nipples better protect newborn pet's lips. Easy to Clean: The feeding bottle are of wide mouth design makes the bottle easier to clean, does not hide milk dirt, the inner wall is smooth, and there will be no scratches when cleanse. Baby bottles can be cleaned in hot water or steam. Accurate Scale: The scale markings are clear and accurate, the minimum scale is 20ml/1oz, the maximum scale is 60ml/2oz, making it easy to measure and feeding. Package: Our nursing bottle gift set contains 3 pcs bottles (60ml/2oz), 3 pcs Small/Middle/Large size yellow color nipple with intelligent pressure regulating valve, 3pcs bottle dust cover, to meet the different newborn daily feeding needs. 1