VIKTOS - PTXF Core Shoe | Winterlochen
VIKTOS - PTXF Core Shoe | Winterlochen - US 9.0 is backordered and will ship as soon as it is back in stock.
Key Features
Key Features
Description
Description
Purpose-built for the tactical athlete who trains as hard as they operate, the VIKTOS PTXF Core Shoe in Winterlochen delivers low-drop training performance across the gym, the track, and everything in between. Designed by US veterans for real-world use, this cross-training shoe supports the specific demands of military and law enforcement fitness: weighted carries, functional movement, and high-rep conditioning that separates prepared operators from everyone else. The PTXF Core handles rucking, strength work, and cross-training without compromise.
The 4mm heel-to-toe drop and high-volume forefoot work together to promote natural foot splay under heavy load, critical for balance during long sessions where fatigue builds from the ground up. The Mobility Bottom Unit delivers responsive grip across gym floors, pavement, and mixed outdoor surfaces, while Parariggers sidewall support provides the lateral structure needed for dynamic multi-directional drills. Backed by a 1-year manufacturer's warranty on materials and workmanship.
Features
- Breathable Mesh Chassis with Reinforced Overlays: Lightweight, ventilated mesh upper promotes airflow during high-intensity sessions, with synthetic leather overlays added at high-wear zones to extend the life of the shoe through hard use.
- 4mm Heel-to-Toe Drop for Training Mechanics: Low-profile drop is purpose-built for training, promoting natural movement, improved ground feel, and better mechanics during lifts, sprints, and functional drills.
- High-Volume Forefoot Construction: Wider forefoot allows natural foot splay under load, reducing fatigue and maintaining balance through extended training sessions with a ruck or barbell.
- Parariggers Sidewall Support: Structural sidewall reinforcement delivers lateral stability and containment for dynamic, multi-directional movements without locking down flexibility where you need it.
- Mobility Bottom Unit: Outsole engineered for traction, responsiveness, and grip across gym floors, pavement, and outdoor terrain, transitioning cleanly between training environments.
- Australian Climate Note: The breathable mesh chassis makes this shoe a strong choice for training in Queensland and Northern Australia heat, where footwear that vents well directly affects output and recovery between sessions.
Specifications
- Colour: Winterlochen
- Upper: Breathable mesh with synthetic leather overlays
- Drop: 4mm heel-to-toe
- Forefoot: High-volume construction for natural foot splay
- Support: Parariggers sidewall
- Outsole: Mobility Bottom Unit
- Warranty: 1-year (materials and workmanship)
30-Day Hassle-Free Returns
30-Day Hassle-Free Returns

Veteran-Founded US Brand
Launched in 2017 by industry and military veterans
Full VIKTOS Range
Apparel, footwear, gloves, bags and tactical gear
Everyday to Duty
Tees, jeans and hoodies through to duty gloves and boots
Australian Owned & Operated
TacSource is an Australian business with a Brisbane flagship store
Why Viktos?
VIKTOS is a US brand launched in 2017 by industry and military veterans, making apparel, footwear, gloves, bags and tactical gear for work, training and everyday wear. The range spans tees and hoodies, pants and jeans, boots, shoes and trainers, LEO and Operatus gloves, backpacks and chest rigs, so you can build a kit from one brand. Dispatch timing is shown on each product page, and some items ship from our US supplier.
The Full Viktos Range
Apparel, footwear, gloves, bags and tactical gear. Explore the complete VIKTOS range at TacSource.




