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Ultra Light Runner - No Show

134 reviews
Size Guide
Light Grey
Solid Black

For those who want the lightest running sock but still want a super-fine Merino wool, the Ultra-light fits the bill. Nothing but protection between you and your running shoes.

  • 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 no-show sock will not fall down into your shoe.
  • Flat knit design for zero bulk.
  • Fully vented top for maximum breathability.
  • No-show height.
  • No cushioning in the footbed.
Super-fine Merino Wool 66%
Nylon 27%
Polyester 5%
Lycra 2%



Customer Reviews

Based on 2 reviews Write a review
Customer Reviews
4.9 Based on 134 Reviews
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Filter Reviews:
Christine D.
United States United States
Great Socks

Love the socks. Very comfortable and really make my feet feel good.

Brett L.
United States United States
Odor Abatement

Only sock I've found that keeps sneaker odor at bay.

Clinton T.
They are great socks that

They are great socks that last and I plan to keep buying in the future.

Lynn K.
The best socks I have

The best socks I have ever bought!

Barbara C.

Love this sock. Feels good on my feet and doesn't overheat!

Curtis W.
they slip within five minutes

they slip within five minutes


Hello Curtis! I'm sorry you are having trouble with your FITS. Please reach out to regarding this issue and a customer service representative will be able to help. Thanks!

Michael M.
These are the best socks

These are the best socks ever! I have had many pairs of fits socks over the years. They are well made and the most comfortable sock I have ever owned.

Mark O.
Comfortable and sweat free

Best choice for socks!



The Perfect Fit Starts With the Right Size.

Your sock size shouldn’t be a guessing game. Our socks range from small to double XL, but the best way to know the perfect fit for you is to match your shoe size to the chart on the left. That way, you’ll know the size you select will give you the fit and feel you expect.

Between sizes? Go with your gut, but rest assured that your socks will still fit great. If you receive your order and find yourself wishing you’d gone up or down a size, just let us know. We’ll happily send you replacements for your preferred size.

Concerned about laundry mix-ups? All FITS® socks are coordinated by color and size, based on the colors you see on the size chart. So, you won’t have to worry about mixing up your sizes with the other FITS® wearers in your home. (But stray socks mysteriously going missing in the dryer? Unfortunately, we can’t help with that.)

Questions? Let’s talk.