The Saturday Baby Straw Cups are made out of 100% food grade silicone material. Put these cups in the dishwasher at home or conveniently wipe them off on the go. The exclusive lid plug means less mess for you with fewer spills and a tighter fit for the straw. 
 
Of course you can always feel safe knowing that all of these products are FDA approved, BPA, PVC, and BPS free.