I'm working up to hike the Appalachian Trail in 2013 and on my training hikes I've been plagued with toe blisters on my pads, sides and tips! Painful and frustrated I thought I would give these a try. After several long 10 mile hikes not a blister anywhere. I've been using another wicked sock to cover them and they have been very warm as well even in the teens! I'm very happy with this product. If they wear out I'll just get another pair because they just do the job they need to for me!  They've held up great after many washes too.  Thanx!!  :-)