These sturdy magnetic and envelopes with assorted sizes are perfect for storing so many of your craft supplies like paper and cardstock, photopolymer stamps of all sizes, thin metal dies, sticker sheets, and even projects in process! Excellent to small parts or supplies for storage. Sealing Bags only, other accessories demo in the picture is not included. These sturdy envelopes with assorted sizes are perfect for storing so many of your craft supplies like paper and cardstock, photopolymer stamps of all sizes, thin metal dies, sticker sheets, and even projects in process! Our magnet sheets and storage bags are commonly used sizes, and the quantity is large, which can meet daily storage needs. Soft Rubber Magentic Sheets These soft magnetic sheets are not only waterproof, but also durable, not easy to tear and easy to clean and cutting. Thickened rubber magnet; moderate thickness, can effectively absorb cutting die