Pebble leather and smooth calf leather| Zip closure, fabric lining| Snap strap keeper| Detachable carabiner clip| 4 1/4" (L) x 4 1/4" (H) x 1" (W)| About the Creative: Known for his work with major cultural institutions, graphic artist Guang Yu's typographical works offer new possibilities of thinking and design. He founded his creative studio A Black Cover Design in 2015.,Style No. 1197, What’s My Size?