Built-in silicone sealing ring, sealing anti-leakage, full of peace of mind. Double-layer center control design and heat preservation can also be anti-scald. Food-grade PP material shells can be in direct contact with food, safety, and health. Microwaveable, high temperature resistant, not easy to deform, use peace of mind. Bilateral buckle with built-in silicone sealing ring, sealed freshness is not afraid of leakage, strong load-bearing capacity, more comfortable to use, easy to carry to school or work. The bottom with the non-slip line, is placed more smoothly. Measuring 9*6.3*2.48 inches, this custom square plastic sealed lunch box. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Portable, durable, practical for daily use.