The 361-PHEONIX is a cutting-edge stability trainer featuring Engage and Primo technology, resulting in a two-piece midsole design that provides exceptional support and cushioning. With higher side walls and a lower foot placement, this trainer delivers maximum stability, while the combination of primo and engage foam offers lightweight comfort and precise foot guidance. The upper is constructed with 35% recycled yarn, ensuring breathability and sustainability. Features: Primo Foam, Engage, Updated Tongue, Recycled Yarn, Removable Ortholite Insole. Surface: Road Type: Moderate Stability Weight: 9.8 oz Drop: 8mm Stack: 26mm-34mm