[FIVE COLOR for ONE WEEK] Set of 20 Piece (10 lids & 10 containers) : Simply cook your favorite meals for next workdays on the weekend, freeze them individually, then you can bring Lunch boxes with different colors to work, school or the gym. | [SATISFACTION GUARANTEE] If you find any damaged or defective product after receiving it or during daily use, please contact us. All our products come with a 1-year warranty for free exchange. | [OVEN, MICROWAVE(Not the lids), DISHWASHER SAFE /FREEZER SAFE] Our food storage containers are made from high quality borosilicate glass, which are oven safe over to 700℉, you can use them for freezer storage,microwave(not the lids)and dishwasher. | [BPA FREE/ LEAD FREE] The glass containers (Lead-Free) and plastic lids( ECO-Friendly, BPA-Free ) are air-tight and leak-proof to make sure there are no spills. | [STACKABLE/ EASY CARE ]These glass containers are made to nest inside each other and save crucial space when not in use. It's safe to wash the lids in the Top floor of dishwasher, but high temperatures over a long period of time can deform the silicone sealing strip at the edge of the lid. Please wash the lids by hand as much as possible.