Instant purchase and bulk purchases are welcome! This was attached to a 160ml wide-mouth type bottle. I purchased it, but I didn't use it, so I've been storing it (*^^*) There is no stickiness or dirt in particular, but since it's made of silicone, there might be some dust from storage. When shipping, I will probably flatten it a bit. How about as a spare heat-resistant cover? Preparing for childbirth / Baby bottle / Newborn