Air and love for the skin! Baby skin is delicate and sensitive and saliva from sucking can strain the skin. That's why we designed our NUK Space Soothers with extra-large air openings to maximize circulation, allowing skin to breathe. This makes them perfect for sensitive baby skin. They feature the improved NUK original shape, modeled on a mother’s nipple while breastfeeding for a natural, satisfying feel. These soothers promote the healthy development of teeth and jaw by exercising baby's lips, tongue, and facial muscles. 95% of babies accept and 99% of mothers would recommend this NUK soother*. Made in Germany; BPA-free. Comes with a reusable carry case that can be used in the microwave.