Vasque Spine Technology helps the waterproof Velocity VST XCR eat up rough singletrack like a hungry bear in a fish factory. A hard, but flexible TPU strike plate runs between the midsole and tread, stabilizing your stride, defending against rocks, and dispersing shock to a SEBS gel insert in the heel. A TPU cage welded over the Airmesh and Gore-Tex XCR upper allows maximum breathability without sacrificing strength or support. Vasque's Mako outsole design maintains supreme grip in muddy trail conditions.
Bottom Line: Without VST, your shoes are spineless.
I got the wide for my EE width foot. They are pretty narrow for a wide shoe, but they fit OK. Nice and light. Soles are pretty thick, I feel tall. Had them out for one hike in the snow, the waterproofing seems to work nicely. I like the tread, it should hold up well.
I heard these were the most popular shoe on the Appalachain Trail in 2008 so I had to try them out. Not the most comfortable shoe but they seem like the would hold up well after a ton of miles on the trail.