If you suffer from blisters or hot spots after running, you’re bound to appreciate the seamless design of these UYN Run Winter One Socks…

UYN Run Winter One Socks

$30 / £22.90, uynsports.com  

Buy now


  • Blister-busting seamless design
  • Good warmth for winter miles 


  • Not the softest fabric
  • Can’t tumble dry

Comfort: 3/5
Breathability: 4/5
Durability: 4/5

They might not be as important as picking the best running shorts or shoes, but choosing the right socks for running can make a real difference. Italian performance gear expert UYN uses state-of-the-art robots to weave its one-piece running socks from highly technical fabrics. The results are completely seamless running socks with strategic padding, breathable zones and reinforcements where you need them most. 

UYN Run Winter One Socks performance

If you’re looking for a sock to add warmth and comfort on colder runs, these merino-blend Run Winter One socks are designed specifically to handle lower temperatures and frosty sessions. In my tests, that worked fairly well, though they couldn’t prevent numb toes on some runs where the temperature hit close to zero. Stance’s thicker Performance Icon Run Crew socks were better. 

Check out the rest of the best running socks

The mid-length legs are virtually cuffless. There’s just the small ring of fabric that holds them securely without any uncomfortable pinching, even on longer runs. The toes and heels have extra padding that makes for a nice protective ride. Extra cushioning rises up the achilles for added protection and the seamless toes create a comfy fit that’s also friction-free. 

Product shot of a UYN running sock

As a thicker sock they don’t play too nicely with tight-fitting race shoes. You might need a thinner alternative for shoes like the Nike Alphafly. 

They feature a mix of merino with Natex – a 100% plant-based nylon fibre that’s good at moving moisture. But I wasn’t a huge fan of the slight scratchiness. It’s nothing serious but they’re not as soft against the skin as the likes of the Falke Stablizing Cool socks that I also tested. Loose yarn loops on the inside of the sock also had a habit of catching my toe nails.

There’s good stretch around the toes, so your pinkies can wriggle unimpeded. Plus the one-piece construction gives the socks a really solid durability. These definitely offer big mileage reliability. 

They feature foot-specific anatomical design and come in four different sizes and three colours. 

Related content: