Thanks to the Professional Ventilation System, designed to restrict air entering the baby's tummy while feeding, 96% of experts confirm a reduction in air in the milk. The thermometer changes color according to the temperature of the contents. If the contents are too hot, the graduation markings will turn white. Clinically tested teat: for an optimal combination of bottle feeding and breastfeeding. High-quality, durable, BPA-free polypropylene (PP) bottle, 300ml capacity. Finally, a good feeling in babies' tummy. Ingesting air during feeding is one of the main causes of stomach upset and constant crying. The NUK Anti-Colic Professional Bottle was developed to help prevent babies from swallowing air while feeding. The secret is the NUK professional ventilation system, which helps reduce ingested air even more effectively. It results from the innovative combination of a valve and an air channel. The air valve ensures that the teat does not collapse during use, meaning your baby can suck continuously without needing to stop. This eliminates one of the main causes of air being ingested. The integrated air channel directs air from the valve directly to the base of the bottle, preventing air bubbles from coming into contact with the milk in the bottle and thus preventing air from mixing with the milk. Less air in the food means less air in your baby's tummy! So, this is how the NUK Anti-Colic bottle helps prevent colic. Confirmed by experts and mothers. Right temperature. Even when it's hot - The NUK First Choice+ bottle with temperature control. You know! When things get a little crazy, a little extra security is never a bad idea. NUK First Choice+ bottles with temperature control quickly show when the right temperature has been reached. With temperature control, the scale on the bottle changes color depending on the temperature of the contents. If the milk is too hot, the indicator, normally blue, turns white. IMPORTANT: The NUK Temperature Control is intended for additional verification. Therefore, the temperature must be checked manually before feeding. To check the temperature of the contents, place a few drops on the inside of your wrist. Natural and jaw-friendly shape. The special NUK shape is modeled on the mother's nipple during breastfeeding, leaving enough space for the baby's tongue and jaw for their sucking movements. Soft as a mother's breast. With its new softer area, the teat adapts perfectly to the child's palate – for a sensation closer to breastfeeding. Clinically tested. The natural shape of the NUK teat has a very high acceptance rate among babies. Therefore, it is especially suitable for babies who are breastfed and bottle-fed. Baby bottle made of lightweight and durable polypropylene: Practical temperature control display that changes color from blue (OK) to white (very hot). Free of harmful substances and odorless - BPA-free. Extra-wide neck facilitates filling and cleaning. Additional screw thread for anti-drip carrying. Slightly tapered shape and wide base allow for a firm grip and greater stability during use. Compatible with products from the NUK First Choice range.