Biosm Salad Lunch Box is made of food-grade PP plastic material, microwaveable after removing the lid. There are single-layer style (spoon is provided) and double-layer style (spoon and chopsticks are provided) to choose from. Design with portable handle for easy carrying. The body of the lunch box is transparent, with 2 compartments to store different food separately. Perfect for travel, work, camping and so on. Imprint lunch box only can be hand washed.