Nursing is a natural instinct for all of us. Anyone who is bold enough, brave enough or curious enough to indulge in this special treat will find this AB bottle nipple the perfect size and shape for adults. This nipple is designed similar to a baby nipple except for it's size which allows it to rest in the "suck zone" of the adult mouth. Smaller baby nipples, when used by an adult only engage the lips and teeth, not allowing the mouth and tongue to form the suction which is the trade mark of babies. The nipple is made of food grade silicone with a medium flow hole at the end.