Ultra-Soft Silicone The ultra-soft silicone rubber with its double thickness ensures ideal softness and elasticity so your baby can latch on comfortably and easily. The shape fits perfectly onto your baby's tongue, allowing smooth tongue movements and minimising air intake. Wide-based Nipple The nipple's wide base helps baby to open his or her mouth widely, encouraging steady peristaltic motion. Wide-neck Streamline Bottle The streamlined shape makes it easy for mothers to hold and keep clean. Made of high quality durable plastic, the wide-neck opening makes preparation of formula milk for baby simple and effortless.