Geli: My experience with no-show socks has been a mixed bag over the years. Some work great, some scoot down into my shoe and I end up with annoying adjustments or heel blisters. When I first tried FITS socks at home, they felt great, the Merino wool blend keeping my feet warm. Living in Oregon, wool socks are my preferred wet weather running socks, so I soon took them out on a run. I was very pleasantly surprised by how well the socks stayed in place. They hugged my foot tightly without binding, there was no seam friction around the toes nor did any wrinkles form, and the heel and ankle remained snug. The padding under the sole is just right. These socks are definitely a good addition to my gear. 
Drew: No-show socks are the only style I own and I typically like the kind with the tabs that protect your ankle from the abuse of your shoes, especially on long runs. The Ultra-Light Runner No-Show socks do not have tabs and while I was skeptical at first, I didn’t need to be. The socks didn’t slip down into my shoes, were insanely comfortable on my long runs and breathe very well considering they are 59% Merino wool! Sometimes, running in the dryer climate of Central Oregon requires a sock that can not only breathe well, but can hold up to the sand and dirt that are everywhere out here. After more than a dozen wears on runs varying from 6 to 20 miles, I love the durability of these socks.
Company: FITS Socks
Products:
- Light Runner No Show ($16.95); colors tested are black and stormy weather
- Ultra-Light Runner No Show ($15.99); color tested is red.
Product features:
- Our patented Full Contact Fit hugs the contours of your foot and stays put so there are no loose socks to rub you the wrong way. This low cut sock will not fall down into your shoe.
- Toe and Heel Lock high impact cushioning.
- Narrow welt just above the shoe.
About FITS (from company website):
FITS is a premium sock brand resulting from the collaboration of third and fourth generation textile manufacturers to create the absolute best fitting sock in the marketplace as a response to an industry-wide epidemic of ill-fitting socks. Utilizing only the best raw materials available, FITS ® incorporates innovative, proprietary engineering and technology to create the most comfortable, best-fitting sock in the world. The result: a product line that embodies the crucial connection between fit and performance.
Thank you to FITS for providing us with samples. Please read our transparency page for info on how we do our reviews.
