- Familiarity: I've used it several times
- Fit: Runs small
- Size Bought: 45.5
I wanted something burlier to replace my TX4s after they started to fall apart prematurely so I picked these up. They are awesome shoes: they're light, supportive enough for backpacking with a 40 lb pack, and I can climb low class 5 in them no problem. The only caveat is sizing. Sizing is quite a bit different from the TX4s. My size 45 (11.5 US) TX4s fit me like a dream but these run small and have a much narrower toe box and run small. After a miserable time climbing Mt. Shasta in a size 45 that I bought without trying on I bumped up to a 45.5 and am quite happy with them. I'd recommend going up a half size to a full size depending on how wide your feet are.