They are dust proof, dishwasher safe, environment-friendly, cost effective, and reusable, kitchen supplies, food covers.The Anderw silicone food savers fit perfectly on a variety of fruits and vegetables like lemons, onions, tomatos, cucumbers, and many more. They are also great for covering open cans and jars to keep contents fresh.Made out of 100% FDA Approved High Quality Food Grade Silicone that is tested to the highest EU standards, and is free from BPA, BPP, PVC, latex, lead, phthalates, and any other harmful chemicals. All huggers are dishwasher safe, making clean up quick and easy.Save money & Save environment,Non stick,non toxic,Eco-friendly to food and environment.By using food caps protectors you will avoid using plastic bags and wasteful plastic wrap