The Harbinger anti-microbial mat is great for stretching

They are constructed with a jute felt top liner prevents abrasion and hot spots in addition to additional cushion and insulation with an active charcoal filter fiber bottom cover to prevent bacteria and provide odor control

Vibram Gumlite maintains its physical properties and slip-resisting characteristics in cold weather

The Vibram® lug sole

The soles are Anti-Slip 4

Vibram Sole Factor #845K Optitank Sole - One Pair Size:39 The Harbinger anti-microbial mat isVibram Sole Factor #845K Optitank Sole One Pair Built for the most demanding environments and activities, solid soles are designed for maximum grip, durability and traction. With trimmable soles of various compounds and lug design, our solid replacement soles are the perfect option for full sole repair. Made with the quality is known and trusted. Adds extra lift and cushion for the entire length of the foot when you cut to fit. Use to repair worn out