Description - Stage 1 straw: It comes with stage 1 straw(6m+) and weighted kit. - Feed in any position: Let baby drink while holding the cup at any angle with weighted kit. - Solid type: The ball of weighted kit is made in a monolithic form which is easy to wash and hygienic - 6 oz & 10 oz: It can be use with 6oz & 10oz Grosmimi cups or bottles. - Comptible: It can be use with other brand wide-neck feeding bottles.   RECOMMENDATIONS & WARNINGS: - Always use this product with adult supervision. - Never use straw teats as a soother. - Continuous and prolonged sucking of fluids will cause tooth decay. - Always check food temperature before feeding.