Grosmimi Silicone Replacement Straws Nipple Kit Stage 2 (4 pcs)Description Including 4 stage 2 nipples. Silicone straw nipple teat comes in 2 different stages, same cut but different intensity, Stage 1 suites from 6 month+, Stage 2 suites for 12 month+. The Silicone Straw Nipple can be replaced with Grosmimi Replacement Straw kit stage 1 2 4pcs Multipack weighted straw for babies over 6 months. + cut prevents any leaking, the straw can be cut into appropriate length according to the height of the cup during use.