There are the perfect no-show liner for slim, close fit shoes. I've been wearing barefoot style shoes for about 4 years now, and most styles don't leave a lot of room for socks. Which is fine, until sweat and gunk build up, and then my shoes are a noxious funk factory. I've had to replace some of my favorite shoes because they just got too stinky after a summer of use. The styles aren't cheap, so we're talking spending hundreds every year to replace shoes that could have been saved had I know about these liners sooner.

I wear 8.5-9 shoe size, and these liners fit perfectly. They cover about 1.5" of heel and toes, enough to fit on the foot, but low enough not to peek out the top of the shoe. They also leave "toe cleavage" unlike other low cut socks that cover a significant portion of the top of the foot. They cover more of the sides of the foot than the similar&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/SHEEC-SoleHugger-SECRET-Socks/dp/B00A7ZDMIK/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">SHEEC - SoleHugger SECRET Socks</a>, but aside from sandals and other shoes without sides, they should be invisible in most shoes.

EDIT 12/18/2013: My second purchase of these is like a completely different product. The fabric covers way more of the toes, and it's not nearly as no-see as the first order.