Lighter, warmer, comfortable, and more packable than socks. They are a new constant in my backpacks that are not in the summer. So efficient they are occasionally too hot at times. Mine are a bright color to make them easy to spot. Great value
Kick out the cold
I have used the sidekick Apex booties over a few nights now in the UK. They fit well with or without socks on and are fine the tent or tarp and weigh next to nothing. Used from 42-26f they have been OK if you have been warm to start with. A great addition to my Enlightened Equipment sleeping system.