ReCap Lids are BPA Free,Dishwasher Safe, Freezer Safe Lids in this kit fit all REGULAR MOUTH standard size (not wide mouth) Mason jars. No longer do you need to twist to open the lid! No more finding rusty parts of kids that always gets lost or mismatched. Use for chia puddings,overnight oats, homemade baby food, sauces, dressings, dips, fruit, salads, and more. Works amazing for storing leftovers and fir food prep.