I thought the Terra boots were quite new on the market, not sure if people are getting mixed up with the Adventure boot, I've had both, the Terra for about 2 months, they are much better suited for off road use. The sole is quite flat not like the Adventure that almost has a heel, they are much stiffer in all aspects but still really comfy. There must be a thicker plate in the sole as when up on the pegs they feel really secure. They have been totally water proof and I can vouch for that!