4 Pcs Silicone Collapsible Food Storage Set Features: Space Saving Our collapsible silicone bowl sets, compressible, stackable, reusable, superior to collapsible tupperware sets with lids. Leak proof design of the collapsible containers food storage makes it very suitable for work, camping, hiking, travel, etc. Air vent design There is a air vent on the lids for microwave heating. Warm reminder: Must pull up the air vent valve on the lid or remove the lid before heating. Upgraded seal ring & Strong snaps Our snap on lid of collapsible lunch container can form an airtight vacuum seal, which can ensure your food is safe and reliable, and keep fresh for a longer time. Temperature range Temperature tolerance of the kitchen collapsible storage containers for food is -40°C~230°C. Microwave safe and freezer safe. specifications: Size and weight: 350ml: ∅120*65mm 500ml: ∅140*65*6.8mm 800ml: ∅160*70mm 1200ml: ∅180*75mm Height after folding: 1.18inch/3cm Color: Pink/Blue 【Safe Silicone Material】Our lunch box is made of premium 100% food grade silicone materials. It’s BPA free, non-toxic odorless, non-stick, leak-proof, easy to clean, and very safe. 【Heat and Low Temperature Resistance】Microwave safe and freezer safe. You can pull up the air vent on the lid, and heat your lunch by microwave. You can store the leftover food in the freezer. Warm reminder: must pull up the air vent valve on the lid or remove the lid before heating. 【Good Sealing Properties】Silicone material is soft and unbreakable,very durable. Well sealed without leakage, water and dust to keep food dry and fresh. 【Foldable Design】This silicone lunch box set is collapsible and easy to fold. Each of them can be fold to 3cm(1/3 of its original size), helping you save 60% space so that you can store them easily, makes it very suitable for work, camping, hiking, travel, etc. 【Multi-functional Lunch Box】The container set are good choice for no matter indoor or outdoor use like food storage, lunch box, bento box, picnic, travel, hiking, camping, travel and more. Fits into almost all kitchen and pantry compartments or any cabinet or drawer.