The VIKTOS PTXF Core 2 Nightfjall is back like a preseason two-a-day. Featuring a lightweight engineered mesh upper, it balances the requirements of support, breathability, and minimised weight while training. Reinforced synthetic overlays provide additional durability in primary wear areas while increasing lateral stability and fit. The overall forefoot volume is slightly reduced from the first-gen Core shoe to cradle the foot during heavy lifts, while still allowing ample splay. The bottom unit is engineered for maximum stability and traction, with enough cushioning for daily cardio use. Much like its predecessor, the only activity the VIKTOS PTXF Core 2 shoe won’t do is take a knee. Lightweight, breathable mesh chassis Synthetic leather overlays for durability Mobility bottom unit for traction, cushioning, and stability Mid volume forefoot for foot splay under load Fitness training focused 4mm heel to toe drop U.S. veteran designed & developed VIKTOS PTXF Core 2 Shoe Nightfjall | TacTree