Silicone nipple-shaped nipple for M size baby bottles. 【Instant purchase OK】However, to prevent any trouble, please read the profile once. I used this, but it didn't suit my child's growth, so I'm selling it. Please purchase only if you don't mind. After each use, I thoroughly clean it with a sterilizer, so I think it's still usable. 【Material】 This nipple is made of plastic, which is durable and safe. 【Size】 The size is M, which is the appropriate size for babies. 【Model Number】 - Model: F205 - Size: M - Material: Silicone - Shape: Nipple-shaped Thank you for viewing.