State-of-the-art soft silicon nipples provide the best in baby feeding. Easily attachable to any Regular-Neck bottle. Designed with special vent technology, these nipples will not constrict or collapse as baby feeds. Shape of nipple is designed to allow for a comfortable and hassle-free feeding. Comes in fast-flow for younger infants, 0-12 months old. Ideal for use at home or in the hospital, with any brand of baby formula. More economical and environmentally-friendly than disposable nipples.