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. - Straw teat is made up of platinum silicone which is a very hygienic and safe, BPA-free material. - The smoothness of the straw protects baby’s teeth and gum. - It can be used in a 2-way system, the baby can drink while sitting down with the tube, or drink in a lying down position without the tube. CAUTION- Always use this product with adult supervision.- Never use straws as a soother.- Continuous and prolonged sucking of fluids will cause tooth decay.- Always check food temperature before feeding.- Inspect before each use and pull the straw in all directions. Throw away at the first sign of damage or weakness.- Do not leave in disinfectant for longer than recommended, as this may weaken the straw.- Before first use place a straw in boiling water for 30 seconds. This is to ensure hygiene.- Please use a straw brush when washing the straw.- When washing, put a straw brush through the teat and wash gently by spinning the teat.(Do not put in and out excessively.)- Avoid direct sunlight or fire.- Please replace the silicone straw every 2-3 months for sanitation issues.- Straws are not suitable for a child under 6 months.- Please check the package instructions before using.