Behind each window is Bible text and an image. Printed in the UK on high quality FSC stock. Each one comes with a mailing envelope. Requires large letter stamp. Size: 24 x 34cm These advent calendars are designed and printed in the UK by an environmentally responsible printer, ISO 14001 environmental accreditation. Printed on FSC Certified board with vegetable-based inks and environmentally friendly water-based coatings. Advent calendars are recyclable. Packed in recyclable polypropylene film.