Finally a boot that fits my foot! I've tried a half dozen brands and this product worked for me right out of the box. No breaking in time; no blisters or hot spots. Nice toe box gives room for a bunion. On an 82 degree day I tested the airflow by stepping in water and getting the boot and my socks wet. I didn't even notice that 90 minutes later the boots and my socks were dry. Out of the box the tread is like glue allowing me to scramble up 60 degree metamorphic boulders and outcrops, using gloves and sort of climbing up quickly on all fours. Nice looking also. Very, very pleased. It's all about the last, of course, so ymmv. For me I'll be checking out other boots from this manufacturer.