The focus with the Matryx® Pack is evolution over reinvention. With our elite athletes competing at the highest levels in both the MTL Longsky 2 and the MTL Skyfire 2, the goal was to further tune these patterns to meet their needs. The upper features a single-layer, Kevlar reinforced Matryx® woven textile that maximizes breathability and durability while dramatically reducing stretch. Internally the lining treatment wicks moisture while the midsole features our best FloatPro™ Foam for long distance comfort. Underneath, we use Vibram® MegaGrip® outsole with 5mm lugs offer maximum traction. • Matryx® upper combines multi-filament threads of Kevlar and high-tenacity polyamide to create a single layer of material that is lightweight, with better breathability and abrasion resistance • 100% recycled laces • 60% recycled tongue webbing • 37.5® temperature regulating mesh footbed cover and tongue lining • ETPU high rebound foam footbed • FloatPro™ Foam midsole for lightweight comfort that lasts • Vibram MegaGrip high performance rubber outsole features unparalleled grip on both dry and wet surfaces • Stack Height: 23.5-19.5mm • Drop: 4mm • Lug: 5mm • Vegan-Friendly • Half pair weight: 0lbs-8.29oz, 235g