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SUMS Ascenders Socks

Important Notice: White & Partially White Socks
  • Colour Variation: Yellowing may be observed on these items. If you require a pristine, flawless white, please do not purchase these socks online. We highly recommend buying white socks in person so you can visually verify the exact colour.
  • Not a Defect: Because this potential discolouration is explicitly disclosed prior to purchase, yellowing is strictly not considered a product defect.
  • Partial Refund Remedy: If you receive a yellowed sock and choose to keep it, you may contact us to request a partial refund of up to 15% of the item's purchase price.
  • Return Exception: We allow returns for yellowed socks as a special exception. You may return the item in person, or if you choose to mail it, return shipping must be covered entirely at your cost. In either case, the items must still comply with all standard return requirements (e.g., unworn, with original packaging).
Colour: Grey / Black
Grey / Black
Mint / Lilac
Size: Small

1 item left

SUMS Ascenders Socks – Grey / Black

Grey / Black / Small

Unisex. Co-developed with Tom Evans. Built for heavy mileage, hot and cold climates as well as sharp ascents and descends.

Tailored through hundreds of test miles to balance compression and flexibility, cushioning and breathability, lightness and durability.

Medium compression, anti-blister cushioning, breathable mesh and zero-slip arch band support.

Sizing

Size S = UK 4-7 / EU 36-40 / US 5-8

Size M = UK 8-10 / EU 41-44 / US 9-11

Size L = UK 10.5+ / EU 45+ / US 11.5+

Cut to fit just below mid calf.

We recommend sizing up if in-between.

Product details

  • Hand-linked, flat toe seam.
  • Anti-blister cushioning on sole, toe and heel.
  • Breathable yarn knit.
  • Medium compression.
  • High-wicking yarn blend performance.
  • Arch band grip and support.

95% Recycled PA, 5% EA

Made In Portugal. OEKO TEX Standard 100 & ISO 9001 Factory.

Wash cold.

Avoid ironing, dry cleaning, bleaching or tumble drying.

TOM EVANS: A 'SWISS ARMY KNIFE' OF A SOCK.

Lavaredo Ultra Trail (120km) Lavaredo finishing line. Tom raced last minute and came in 2nd. The challenge was clear - Tom needed something that can withstand heavy mileage, adapt to hot and cold climates as well as support big climbs and sharp descends. After months of edits, iterations and test mileage, Tom was ready to put them through their first race - Lavaredo Ultra Trail (120km).

MEET THE ASCENDERS.

Tailored to balance cushioning vs breathability, compression vs flexibility, lightness vs durability. Or "Hell-proof", as Tom puts it. There are three colourways, the camouflage designs are a nod to Tom's service in the military, socks that connect to his signature salute on the finish line. We hope they take you on some wild trail adventures of your own.

MINDFUL OF MOTHER NATURE.

Our fully certified factory in Portugal (Global Recycled Standards, GOTS, OEKO TEX Standard 100 & ISO 9001). The majority of conventional running socks use environmentally harmful virgin synthetic fibres (plastics like polyesters, polyamides etc). By using a recycled Nylon blend we benefit from the performance elements of these fibres whilst dramatically reducing the energy, water and emissions associated with manufacturing a virgin material from scratch.

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