This safe glass material with a wide mouth makes it easier to reach the bottom of the jar that can be cleaned thoroughly with a damp cloth. Furthermore, the sturdy glass quality ensure the mason jars are completely dishwasher safe, microwave safe. You can clean them with water and soap, no worries! Multi practical can be refrigerated, frozen, microwaveable, fresh, suitable for storing all kinds of food. You can use these jars to make jams, puddings, salads, drinks, and preserve all kinds of food you want. DIY fruit wines, rosehip jam. Pickled vegetables like sprite lemon cherry little carrot, cucumber with sauce, shiso ginger. DIY Canned Candied Vegetables as canned pineapple, tomatoes with plums, chestnuts.