"Let Nature Be Your Teacher" Add texture and personality to your walls while reminding yourself of poet William Wordsworth's wise words. This modern banner by Gladfolk is a lovely mix of neutral, natural materials - including canvas, oak wood, and cotton twine - with all materials sourced in the United States, sewn locally, and printed by hand. Each individual banner measures 14" wide by 20" tall from the top of the canvas to the bottom point.