Login
Start Free Trial Are you a business? Click Here

Sums Reviews

4.9 Rating 1,674 Reviews
97 %
of reviewers recommend Sums
Best running socks out there! Wear for all training up to marathon distance, road and trail. Love them- particularly the lilac colour way!
Helpful Report
Posted 1 month ago
The socks arrived quickly. I can't comment on the fit. They're a requested birthday gift for my daughter and she yet to receive them from me.
Helpful Report
Posted 1 month ago
I've had a few pairs now and there pretty good. I wore the all seasons for a marathon and had no issues really. They look good and feel nice if not a little tight to get on but once they're on its all good. Probably be my go to run sock from now on.
Helpful Report
Posted 1 month ago
Best socks for running I have ever had.
Helpful Report
Posted 1 month ago
I wanted to give them a thorough test from a wear and wash perspective and they are great, didn’t shrink or get messed up and these are the only socks that I can wear on a running machine that don’t give me blisters. I’m thoroughly enjoying them.
Helpful Report
Posted 1 month ago
Just the best. Wouldn’t run without them anymore.
Helpful Report
Posted 1 month ago
These are the only running socks I like to wear. No blisters after 2 hours of running, good compression, and nice to look at!
Helpful Report
Posted 1 month ago
Great socks, super comfy and look great. I've got quite narrow feet but unlike most running socks they don't move around
Helpful Report
Posted 1 month ago
Fantastic socks I won’t wash them so I don’t spoil them!!
Helpful Report
Posted 1 month ago
I was initially a little sceptical about them. However, they do exactly as they say, comfortable, don't feel horrible and sweaty in the shoe. So all in all. Really impressed!
Helpful Report
Posted 1 month ago
2nd pair now . Love them ! Used for 2 marathons and a PB half . Please release even more colours so I can buy more
Helpful Report
Posted 1 month ago
The running socks I trust the most. Not only are they super comfy and mean I can run blister free, their customer service is great too. I recently purchased a few pairs of socks and accidentally ordered the wrong size - this was rectified super quickly once I emailed the Sums team who helped me process a return and resent me the correct size in no time!
Helpful Report
Posted 1 month ago
Great socks. Fir me the level of compression minimises skin friction against the sock/trainer as foot moves around when running on technical terrain. Use in all my A-Events.
Helpful Report
Posted 1 month ago
So good! They are so comfy and keep my feet blister free on my long runs. Also they last well! No holes so far!
Helpful Report
Posted 1 month ago
Great service and top quality socks
Helpful Report
Posted 1 month ago
I just completed the UTS 80k event in the SUMS All Seasons socks and wow! I was super anxious about existing sore spots picked up through training going into the race and chose these socks after reading multiple reviews - I couldn't be happier with how they performed! The race takes runners from the coast up all terrains into Snowdonia, peaking up Snowdon itself, then down through the technical terrain of the valleys. I took a spare pair of All Seasons with me but didn't even need to change at the 50-60k point as I felt no discomfort or hot spots whatsoever. Awesome product that I'll be using in future ultra events!
Sums 5 star review on 18th May 2026
Helpful Report
Posted 1 month ago
Very good running socks!
Helpful Report
Posted 1 month ago
I the socks I purchased the Hackney Half today. They were really comfortable, supportive and zero sweat - loved them!
Helpful Report
Posted 1 month ago
Very comfortable with a good level of compression. Quick delivery. Will buy again.
Helpful Report
Posted 1 month ago
I am a terrible sock parent, my socks have been tumble dried, put on a hot wash and left in the bottom of a gym bag for far too long and still taken me from 5ks to marathons with some trail runs in between comfy and blister free. My oldest pair are well over a year old now and still going strong 10/10 worth the money.
Sums 5 star review on 17th May 2026 Sums 5 star review on 17th May 2026 Sums 5 star review on 17th May 2026 Sums 5 star review on 17th May 2026 Sums 5 star review on 17th May 2026
Helpful Report
Posted 1 month ago
Sums is rated 4.9 based on 1,674 reviews