Airtight lid protects your food from moisture and storage pests. Compatible with ZWILLING FRESH & SAVE vacuum pump: The vacuum function keeps your food fresh longer and reduces food waste. High-quality, minimalist design made of transparent material. Made of glass-like material, the box is durable and dishwasher safe for easy cleaning. Organize your stored food for more visibility and less food waste. Simply attach separately available NFC labels to the boxes, scan them with your smartphone and connect the ZWILLING app.