Used for about six months. I used these in conjunction with baby bottles from another manufacturer, so there's no significant damage, and they're still perfectly usable. Includes: 160ml plastic baby bottles x 3 Caps x 3 Hoods x 3 Nipples, size S x 5 Nipples, size M x 2 (One is an older type, but usable) Nipples, size L x 2 Total: 18 items. The nipples were used for about two months each. There are no tears, and they are perfectly usable.