MACKALL 45 - THE GR1 OF FOOTWEAR We fused our elite Special Forces Rucking chassis with a sharp, heritage suede upper for modern performance and old school looks. This means you can wear one pair of shoes for workouts, travel, and dinner. From stepping out on the streets of NYC to an overnight beatdown at RUCK OR DIE, the Mackall 45 delivers zero-blister comfort, rugged durability, and uncompromising performance out of the box.