Two pieces!  Instantly convert your favorite regular-mouth mason jar into your new favorite drinking glass!  These mason jar lids with straw holes are perfect for when the little grandkids come over too!  These lids feature a flip-top closure, so if your child doesn't finish his milk, you can easily put it back in the fridge.  Made from food-grade plastic with a silicone flip top. Food grade means it does not leach harmful chemicals!  THIS LISTING IS FOR THE YELLOW COLOR.  *Mason jars and straws are not included