A back zipper is a slide fastener located at the rear of a garment or shoe. In footwear, a back zipper closure is mostly used in high top boots for women and is intended for esthetic purpose rather than functional.
About Cork Shoes:
Cork shoes are shoes that use cork as the main material for the midsole. The midsole of cork shoes is lightweight and spongy, and provides good cushioning while allowing the footbed to mold to the foot overtime.