1.NON-TOXIC & LONG-LASTING: mixing bowls are made of pure stainless steel without any toxic coating and the airtight lids are constructed by food grade plastic, No harmful chemicals leaching when mixing/serving/storing, Safe and y for everyday use, Excellent and hardness stainless steel to prevent rust and deformation, Ensuring a longer life 2.EXQUISITE CRAFT: Airtight lids for sealing tightly, Helping to avoid dust and keep fresh for longer time, Great for food storage, Arched design on both sides of the lid for easy opening and closing, Rolled edge of the stainless steel mixing bowls provides solid and comfortable grip, Deepen design allows salad bowls to contain more food and prevent splashing while mixing 3.NESTING DESIGN: Nesting design of the salad mixing bowls makes them easy to stack one inside the other (3 IN 1), Helping to save storage space in cabinet or drawer, Keeping your kitchen neat and well organized, And also convenient for carrying 4.EASY CLEAN: The metal mixing bowls featured with mirror finished interior for a shiny appearance and matte exterior for anti-fingerprint, The smooth surface also easy to clean by hand, The nesting bowls are dishwasher , Helping save your labor time (Note: the lids not dishwasher )