Well-Being Colors plastic bottle with Physio silicone nipple is the best solution for mixed and artificial feeding.Physio nippleThe flat and long shape of the nipple makes it easy to latch on and swallow milk correctly.Soft Sense SiliconeSoft, hygienic material with a velvety surface provides a natural and pleasant feeding experience for your baby. Clinically testedFollows the natural physiological rhythm of suckling.*96% of mothers confirmed the anti-colic effect.