Sizzix Bigz Die - Envelope, MiniPersonalize your stationery supplies with the Envelope Mini. The perfect accompaniment to your handmade papercrafts, this set has all you need to send beautifully presented letters and cards. The steel ruled die means you can use the Envelope Mini with a multitude of materials, ideal for a range of creative pursuits including party invitations and special handwritten letters to loved ones. With steel rule construction, a Bigz die cleanly cuts thick