SUMS

SUMS, technical running socks with recycled nylon

SUMS is a British brand dedicated exclusively to running socks. Its offering is built around three pillars that the company itself states: performance, sustainability and social impact. The product is made with a blend of recycled nylon and cushioning designed specifically to prevent blisters, intended for use on trail, road or track.

Model range

The shop organises its range into several product lines, including the following:

• All Seasons
• Ascenders
• Checkers
• Merino
• Cushion Deluxe
• Long Compression

The brand also offers the option to customise the sock design, as indicated by its custom design section.

Earn-Per-Run programme

SUMS runs a rewards system linked to the customer's sporting activity. By connecting a Strava account, every run logged during the following 30 days generates store credit. The brand also contributes an equivalent amount to a monthly charity fund. The programme is managed from its own user dashboard, where runners can check their accumulated kilometres, available credit and funds raised, both for the current month and the all-time total.

The system also includes reward tiers based on the number of completed runs, with redeemable discount codes. The brand states that the amount per logged run is 5 pence.

Review collection and product guarantee

The site displays more than 1,700 reviews with an average rating of 4.9 out of 5. The brand has a mechanism for registering socks received as a gift or bought in a physical shop, by uploading the product's unique code or the purchase receipt.

Customer care and editorial content

SUMS has a customer care section with a help centre and a journal or blog section. The brand also organises its own events and publishes content on recycling and sustainability.