Here's the product description from the manufacturer: ① Vacuum Preservation to Maintain Freshness Simply press the pump button to remove air in seconds, creating a vacuum. This prevents oxidation and moisture, preserving the crisp texture, aroma, and flavor of food. ② Easy Opening/Closing & Secure Sealing The simple lid provides high sealing power even without vacuum preservation. It can be used as a regular airtight container for frequently opened and closed foods, preventing mold and insects. ③ Maximize Space Utilization Modular design allows for uniform width and height. The straight cube shape from top to bottom eliminates dead space, maximizing space and providing neat storage. ④ From Cupboards to Drawers Available in 8 sizes to fit any kitchen space. The see-through lid allows you to check the contents from above, making it convenient for drawers and under-sink storage. ⑤ Easy Food Management with the App Scan labels with your smartphone to easily create a food list with expiration dates. The app alerts you when expiration dates are approaching, preventing food waste and double purchases. We've also focused on ease of use because you use it every day. ◆ Lightweight and Durable Resin Made of resin that won't break, is lightweight, and easy to handle. It's scratch-resistant and has a glass-like transparency, allowing you to see the contents and remaining amount at a glance, from both the top and the side. ◆ Easy Cleaning in the Dishwasher Both the body and lid are dishwasher safe. The simple lid is easy to attach the packing. You can always keep it clean, and changing food is not a burden. With "CUBE," a new dimension of food storage that pursues deliciousness and space-saving, we support a sustainable diet and beautiful kitchen storage by helping you eat everything to the end. M Size: Wide-mouth type for easy removal of contents. Perfect for large ingredients and deep shelves. Suitable for seaweed and snacks. Body: Plastic (BPA-free) / Lid: Plastic, ABS (BPA-free) Dishwasher safe (set below 90°C) Not microwave safe Made in China An optional Inner Lid M (1025335) is available for use. *A dedicated Zwilling vacuum pump is required for vacuum sealing. *Note: Some foods are not suitable for vacuuming, such as foods that produce gas (raw onions and garlic/cheese/coffee beans/fermented foods/some pet foods). Item No.: Z1025-126-0 This is a gift. Please purchase only if you understand that it is a home-stored item. Please refrain from purchasing if you are sensitive to such matters.