Login
Start Free Trial Are you a business? Click Here

Sums Reviews

4.9 Rating 1,435 Reviews
97 %
of reviewers recommend Sums
Overall really pleased with these socks. I followed sizing guide advice and purchased a size medium for my UK9 feet. I was initially worried that they were too small but once tried on they fit perfectly...snug but not tight or restrictive. No hotspots so far and comfortable after several hours in the wet. Highly recommended and ill be back for more.
Helpful Report
Posted 1 week ago
Great quality socks and very comfortable for running. I initially had some trouble getting a response from customer support when trying to arrange a return/exchange, which took a couple of weeks and several emails. However, once the team saw my review they got in touch quickly, apologised for the delay, and resolved the issue in a very generous way by letting me keep the original pair and sending another pair out. Really appreciate them putting it right, happy to support a small brand that stands behind their product.
Helpful Report
Posted 1 week ago
Howard! I've emailed you.
Posted 1 week ago
lovvveee them mate
Helpful Report
Posted 1 week ago
Very good so far, have been comfortable and durable. Very breathable on the foot too hardly notice them which is always a good thing.
Helpful Report
Posted 1 week ago
Very pleased with my new socks, on a super wet and cold London Winter run I had no issues with my feet, socks performed very well! And looked pretty fetching too😁
Sums 5 star review on 12th March 2026 Sums 5 star review on 12th March 2026
Helpful Report
Posted 1 week ago
Doing a cracking job. No discomfort or blisters.
Helpful Report
Posted 1 week ago
Lovely look and feel, good quality socks. Scored down as they are incredibly tight. Ordered size 8-10 (for size 10 feet) and were so tight restricted blood flow and were not comfortable to wear for long run.
Helpful Report
Posted 2 weeks ago
Hey Glen, I've shot you an email!
Posted 1 week ago
Absolutely brilliant socks. Have a few pairs of theses and on a 100 mile race I only changed them once. No blisters and no rubbing. They kept my feet in good condition even though I had been through bogs and wet land over the course of the 100 miler. Even when moving uphill they did not move once. Can not recommend these socks enough.
Helpful Report
Posted 2 weeks ago
These are my third pair of socks and I really enjoy them when out. I don’t have any problems or blisters during any long run.
Helpful Report
Posted 2 weeks ago
Experience so far is positive, comfy socks with good structure in a great colour.
Helpful Report
Posted 2 weeks ago
My son and grandson love these socks. They are both cross country, half marathon, marathon and Ironman heroes. They haven't found anything else to compare these socks to. Great achievement 👏
Helpful Report
Posted 2 weeks ago
Fantastic socks! Worn for a few long runs now and no blisters or pain. Before this I was getting blisters on many of my long runs so these have been an absolute game changer!
Helpful Report
Posted 2 weeks ago
Very comfortable Fly feet shot 🏃‍♂️
Sums 5 star review on 6th March 2026
Helpful Report
Posted 2 weeks ago
Sums socks have become staple for me, I wont run in anything else.
Sums 5 star review on 5th March 2026
Helpful Report
Posted 2 weeks ago
Unreal socks. One of my favourite brands, managed to snag a limited edition hat from Love Trails a couple of years ago which is now my prized possession. Don’t tumble dry!!! 🥲
Helpful Report
Posted 2 weeks ago
Best trail running socks I've ever had. Perfect fit, function, comfort, durability. I've tried socks from every leading (and many a niche) maker of trail running shoes and apparel. And years of trial and error with brand after brand keeps leading me back to Sums as the champion.
Helpful Report
Posted 2 weeks ago
The perfect running socks. They keep my feet blister free, they look good, and wash really well. I've bought many pairs for friends and family 10/10
Helpful Report
Posted 2 weeks ago
Love the colour, fit and feel!
Helpful Report
Posted 3 weeks ago
Very nice socks, enjoy them during each of my runs
Helpful Report
Posted 3 weeks ago
Superb Socks! Excellent service, delivery and great for all runs!
Helpful Report
Posted 3 weeks ago
Sums is rated 4.9 based on 1,435 reviews