Step it up – Gradient 3.0 boots

Everything about the Gradient 3.0 has been designed for water. The Vibram sole, made from ultra sticky Idrogrip rubber compound with traction lugs, keeps your feet planted when climbing or descending. The midsole's dual density foam cushions your heel and aids stability and control with denser foam on the forefoot.

[brentwade]

Nice, but sole looks pretty thick for fitting in a 'yak.