Koio's Retro Runner is presented as a sustainable, vintage‑inspired sneaker combining LWG Gold–certified Italian leather, a recycled midsole/outsole and an Ortholite X40 insole; packaging includes a sturdy pale blue‑green box and beige bag. The reviewer (video dated 2021‑04‑24) found them comfortable with more padding than Koio's Capri, recommended normal dress‑shoe sizing, and praised the grippy black outsole.