PERFECT MEAL PREP PET - These portion control bento boxes come in a 50 Pack of durable meal prep containers with lids to prepare your healthy meal plans for the week ahead and achieve your nutritional goals AIRTIGHTS LIDS DESIGN - Helps prevent your food from spoiling by keeping your food away from air and preventing smells in your fridge from pervading your food. Stacks nicely in the kitchen cupboard or fridge. PREMIUM QUALITY & DESIGN - Most meal prep containers don’t last for a long time. They crack after a few uses or melt in microwave. Not WGCC, our heavy duty lunch containers are built to be more strong and reusable than our competitors. MICROWAVE, DISHWASHER AND FREEZER SAFE - Made of the highest quality food safe materials, these bento box can withstand temperatures from -40C to +220℃ - so enjoy without worry about harmful chemicals leaking into your food.