The Philips AVENT SCF244/40 ultra air pacifier for babies 0-6 months is designed with a lightweight, breathable shield for baby's sensitive skin. Four (4) extra large holes in the shield allow for maximum air flow, so skin stays drier while soothing; 84% of moms agree! 98% of babies accept the nipple, so you can feel confident with this choice. Comes with 4 pacifiers packaged in 2 sterilizer/ carrying cases that can be used to sterilize them with water in the microwave and transport them. Metrixlab home placement test with 118 U.S. Moms, 2017 98% of moms say their babies accept the textured nipple in our ultra air and ultra soft pacifiers, independent research, USA, 2016 - 2017.