The phrase "comfortable nest" means a cozy and safe place where one can feel relaxed and secure, like a bird's home made of soft materials and protected from danger. Full definition
Being comfortable not only in your outfit, but in your skin, encourages confidence which is one of the most important elements of style! (lilmissjbstyle.com)
I feel comfortable calling it lame, and I also feel comfortable not losing any sleep over it or what it means for the ecosystem of the game itself. (sbnation.com)