The cushion is 20" square.
I topstitched in heavy cotton jeans thread.
My favorite bits are the enclosure details on the back. More jeans top stitching, and reinforcing rivets on both edges of the zipper opening.
The zipper is No. 5 (standard jeans size) antique brass with a chain pull. I considered going with a jeans locking pull for the zipper but I decided the locking would be annoying.
The cushion is lined with upcycled yarn-dyed cotton sheeting and bound with cotton chambray
I love the denim patina on the back.