- Hoka One One Carbon X 3 Mountain Spring Puffin’s Bill Size 8D - Worn once - Super support, super propulsion, built for speed - Road running shoe that is an endurance racing shoe featuring a carbon fiber plate and an updated upper - Comes with the box - ProFlyX™ midsole and a cozy knit upper - In the midsole, a soft and light EVA foam blends with a durable, rubberized EVA foam for a fast feel at ground contact - Blue, orange, white - Open to offers