**Food Grade Material:**  
Our Keweis lunch box set is crafted from premium food-grade safe PP plastic (external) and durable 304 stainless steel (internal), ensuring safety and durability. BPA-free and odor-resistant, it's perfect for adults, kids, women, and men.

**Keep Food Warm:**  
Designed with a stainless steel bottom and PU foam filling, our thermal lunch box keeps food warm for 3-4 hours. Preheat by wetting the box with hot water before use. Enjoy homemade meals conveniently, whether at school, work, or outdoors.

**Leak-proof & Convenient Design:**  
Each bento lunch box features a double silicone seal to lock in freshness and prevent leaks and odors. The clamshell exhaust valve and handle on the lid enhance convenience. The double heat insulation layer ensures a comfortable grip, even with hot food inside.

**Lunch Box Set:**  
Get 4 insulated bento lunch boxes in two sizes—two large (20.1oz/620ml) and two small (14.2oz/420ml)—along with an insulated lunch bag for enhanced portability. Ideal for storing soups, fried rice, pasta, salads, fruits, and more.

**Free Combination:**  
Our stackable design allows for versatile and separate storage options, preserving the original flavor of your food. Perfect for various occasions, from school and work to exercise, camping, and travel. Enjoy a pleasant and refined dining experience anytime, anywhere.