Yesterdays wet weather proved no problem, feet stayed dry.  Have yet to have a really cold day to remark on the insultation or traction on ice, nor had them long enough to determine longevity.  Roomy shoes will allow me to wear two layers of socks on really cold days.  [added this after 2.5 years of occasional use - The soles wear faster than I would like walking on asphalt or concrete. So if you do mostly city walking as opposed to woods you might want to find a sole material that will wear better on pavement.  Grass and mud are no problem, good traction on ice. And very good keeping feet dry in snow, but if you step in water that reaches the flaps, they leak immediately.]