I'm not sure of the exact date, but I purchased these about two years ago and have used them 4-5 times. I'm selling them because the size is a bit off. Specifications are as follows: [Product Description] HOKA ONEONE CHALLENGER MID GORE-TEX WIDE OXFORD TAN/DUNE Hoka One One Challenger Mid Gore-Tex Wide (¥30,800 including tax) The CHALLENGER MID GTX performs exceptionally on all surfaces, from trails to roads. The waterproof GORE-TEX fabric membrane keeps your feet dry in any season, and the anatomically designed mid-cut collar supports your feet. Additionally, the non-slip rubber all-terrain outsole with 4mm lugs provides smooth cushioning for this versatile boot. With a balance of appearance and performance, the CHALLENGER MID GTX is sure to be useful in a variety of situations and applications. - Waterproof GORE-TEX fabric membrane provides complete protection for your feet in all weather conditions. - Anatomically designed molded foam padding supports the ankle. - A stitched "seatbelt" in the midfoot securely holds the midfoot in place. - Early stage Meta-Rocker for a smooth ride. - Lightweight, oversized EVA midsole provides HOKA®'s signature cushioning. - CMEVA foam midsole provides a stable platform and absorbs impact at the landing point. - 4mm lugs in the outsole provide grip on all terrains. - Unique outsole design maintains stability on rough terrain. Main color: Beige