- There are buckles on the edge of the box cover, which can make the box cover and the box body more closely connected, improve the sealing performance, and enhance the freshness preservation effect - Suitable for a variety of activities: gym, leftovers, picnics, portion control, work lunches, travel and more, and come in a variety of shapes and sizes to suit your purposes. You can use them for freezer storage, microwave (not lid), and dishwasher safe, easy to use and easy to clean. - PP material, wear-resistant and drop-resistant, not easy to damage, long service life, and more secure to use - Size: 7.5 x 4 cm