PACKAGE INCLUDE - 2 bottles + 2 silicone straws + 2 straw brushes + 1 bottle brush, 8oz = 1cup = 235ml, SIZE: 5.6 x 2.2 inches , LEAK-PROOF bottle cup, FOOD-GRADE bottle and lids, BPA-FREE latex free medical grade silicone strawsINTENDED USES - Premium feeding and drinking therapy tool for individuals with Down Syndrome, Dysphagia and other special needs/abilities. Teach and help transition to straw drinking, tongue training, lip rounding, tongue retraction, and other oral motor skills, also ideal tool to wean a child from bottles and sippy cups.EASY TO CLEAN - Due to special uses, they are not dishwasher safe or microwave safe. It's easy to clean straws with straw brushes and bottles with multifunctional sponge brushLEAKPROOF BOTTLES - The bottle cap hole contacts with the straw closely, as the diameter of the hole and straw are the just right same size. It's handy to remove and insert without leakage even if inverted