Bestfull Stackable Meal Prep Food Storage Containers with Silicone Mat. High Borosilicate Glass: Made of high borosilicate glass with heat and cold resistance. Safe Material Composition: Features baby pacifier grade PP material and food grade silicone mat, BPA free. Leakproof and Airtight: Functional design ensures airtight, leakproof, and stackable storage. Multi-Shape and Color Options: Available in Rectangle and Round shapes with Amber, Blue, Purple, and Creamy white colors. Customizable Sizes: Any size can be customized to meet specific requirements. Wide Temperature Resistance: Withstands thermal shock from 120 to 220 degrees Celsius. OEM/ODM Services: Accepts OEM and ODM orders for logo and color customization. Certified Manufacturer: Passed ISO9001, ISO22000, and BSCI certifications with 20+ years experience.