• High-quality PET plastic lids, durable and do not deform. They have health certificates for food contact. • Compatible with supermarket yogurt jars of store brands like Mercadona, Danone, la Lechera, Carrefour. • Reusable and eco-friendly, you can use them as many times as you want, contributing to the environment by not generating more waste from glass yogurt jars. • Easy to wash, you can safely put them in the dishwasher or wash them with water and soap. • Easy to place, you just need to apply a little pressure for them to close with a click and fit snugly on the yogurt cups.