These boots are awesome. Living in central Alaska you have to have a tough, warm pair of boots for the winter. I saw these in pink and knew it was meant to be. They are so warm, great tread, finger hooks to help pull them on and tread on the heels to help kick them off! So I have the Sports, rated to -40F and my husband has the Pros, rated to -60F. He is a hockey coach and is at the rink with his players 2-3 hrs/day, 5 days a week. When he's not wearing skates, he's wearing his boots. So far here it's gotten to around -30F, his feet and mine are always toasty in our boots. I wear mine every day of the week for hours at a time. I walk to my sons bus stop, play with kids outside at the school I work at, etc and never have problems. I would not recommend going hiking or hunting in these if there isn't snow on the ground, these boots are thick rubber and you wouldn't realize there's a hole until its too late. I think they'd be fine for winter fishing, hunting, sledding, etc. Some of the negative reviews talk about slipping or getting holes, I cannot imagine that unless the boots are too big or you are in rough terrain. They are made for winter conditions, hence the name. I have purposely tried to glide on the ice of a slick parking lot and these boots would not let me slide. If you buy these for the intended purpose you will not have issues.