Spill-Proof: All 4 containers are airtight and liquid-tight. They not only keep your food fresh but they prevent it from leaking or spilling into the bag. | Space-saving: The containers are classic Tupperware - modular and stackable. They can be easily stacked on top of one another in the bag or nested when not in use. | Easy Open: The container seals have large tabs for easy opening. | Carry your Style: The lunch bag is designed for the workplace - smart, stylish and discreet. | Carry More: The lunch bag has ample space to accommodate all four containers, yet have space for a piece of fruit or a small snack.