This prevents you from spilling the precious dr milk

The Haakaa collector is made of 100% medical silicone

If you do not use the ties at the bottom

food approved melamine

Klean Kanteen Kid Cup Sugerørslåg til 296ml Cup - 2-Pak - Blue/Tie Dye Suttesnore This prevents you from spillingKid Cup spill proof straws are BPA free, made of food grade silicone, and have et reusable straws with a soft silicone tip for reusability and safety. Straws with straw tips come with all Kid Cups, and both the cup and matching straw are made of 90% post consumer recycled stainless steel. The practical lid is sold in a 2 pack. NOTE: The lid is NOT leak proof. Fits Kid Cup 296ml and Steel Cup 296ml.