Lead-free High-borosilicate glass 20 PIECE GLASS CONTAINERS SET: 10 Containers with 10 lids, Package includes: RECTANGLE - 1050ML/ 35.5OZ*5 and 12.5OZ *5. Perfect for five weekday lunches per week, but also to take to the gym, office, picnic, party, travel, outdoors and indoors. OVEN/MICROWAVE/FREEZER/DISHWASHER SAFE-from -40/-40 in freezer to 400/752 in oven, safe for oven, microwave, dishwasher and freezer.The lids are not oven or microwave safe,please remove the lids before heating and cooking food.It's safe to wash the lids in the 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. AIRTING HINDE-LIDS: A locking lid creates an airtight seal for food freshness. Newly innovated hinged-lids technology enables the lid to flip open and shut quickly and lasts longer than those crafted of one piece.specially designed snap down, no leak lids are completely