Lounge Straw & Cap - Rose by Binkfits on the Mama Hydration Tracking Water Bottle. Dishwasher safe.If you have the Mama Hydration Tracking Water Bottle, grab a straw to guarantee maximum hydration during childbirth. This reusable silicone flexible straw and cap makes for clean, easy drinking. BPA-Free and Phthalate-Free, the straw is made from the purest food grade silicone and is dishwasher safe. Take your bottle with its straw in your hospital bag, and enjoy keeping it on hand post birth for maximum hydration.