Altra's Provision continues its tradition of innovative dynamic support and comfort. The Provision 3.5 features a revamped durable mesh upper, bright red GuideRail for visibility, and a sleeker overall profile. The built-in heel varusing, GuideRail and tripod Stabilipod system remain the same and help to enhance your naturally stable foot zones. These features combined with Altra's signature Zero Drop platform, FootShape toe box, and Fit4Her technology provide a proper, supportive fit that will keep you strong for the long run.