series 001 - ultra running socks - black
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designed specifically for the pre-dawn starts and the rain-soaked trails. It hides the mud and absorbs the wear, allowing you to move anonymously through the harsh conditions while keeping your kit looking sharp and intentional.
Engineered with a premium, quick-drying polyamide and high-tension elastane blend, this is not a disposable accessory. It is a utilitarian piece of equipment designed to eliminate friction, survive brutal training blocks, and stay perfectly locked in place from the first mile to the last.
THE ENGINEERING:
Zero-Friction Tech: Constructed from a high-density, moisture-wicking polyamide blend specifically designed to eliminate hot spots and blistering on high-volume days.
The Arch-Lock: Integrated high-tension elastane prevents the sock from sliding, drooping, or bunching inside your shoe, regardless of your cadence or the terrain.
Analog Aesthetic: Finished with our signature high-contrast Volt foot-strike block and classic, 1970s-inspired "E - SERIES 001 // ULTRA" typography standing out in stark white on the lateral ankle.
Optimal Height: Engineered to sit deliberately just above the ankle, providing maximum Achilles protection without unnecessary bulk or drag.
all terrain
in the wild
wear it your way. on the roads. on the trails. made it endure.
Faqs
Categories
Shipping
How long will my order take to arrive?
Orders are dispatched within 24 hours of drop allocation. UK orders typically arrive within 1–3 business days via standard untracked/tracked letterbox shipping. International delivery times vary by destination.
Will the package fit through my letterbox?
Yes. Single and multi-pair orders (up to 3–4 pairs) are shipped in minimalist, letterbox-friendly mailers so you do not need to be home to receive delivery.
Do you ship internationally?
Yes, we ship worldwide. Shipping rates and estimated delivery times are calculated automatically at checkout.
Returns
What if I ordered the wrong size?
Unworn, unwashed socks in their original band packaging can be exchanged for a different size within 30 days of receipt, subject to stock availability.
What is your guarantee policy?
We build equipment to last. If your pair suffers a material defect or premature failure outside of normal trail wear-and-tear, contact our support team with your order details and photos for a replacement assessment.
Care & Maintenance
How should I wash and care for Series 001?
Machine wash cold (30°C) inside-out on a delicate/sports cycle. Air dry flat. Do not use fabric softeners or bleach, as softeners coat the technical fibers and ruin the moisture-wicking and compression capabilities. Do not tumble dry.
What is the expected mileage lifespan of a pair?
Series 001 is stress-tested for hundreds of miles under harsh conditions. While longevity depends on terrain, shoe fit, and runner biomechanics, the reinforced heel and toe zones are built to outlast standard technical socks by a wide margin.
Sizing & Fit
How do I choose the correct size?
Choose based on your standard UK running shoe size. If you fall on the border between sizes (e.g., UK 7.5 or UK 8), we recommend sizing down for a firmer, locked-in compression fit, or sizing up if you prefer slightly less arch constriction over ultra-distances.
How tight should Series 001 feel?
Series 001 features targeted arch compression and a high-gauge cuff. They are designed to fit skin-tight without bunching or sliding. If there is excess material around the toe or heel, the sock is too large.
Technical & Performance
Are these socks suitable for ultra-marathons and trail running?
Yes. Series 001 // ULTRA was engineered specifically for sustained high-mileage efforts. The high-density knit resists grit penetration on trail runs, and the reinforced heel and toe cushion impact across 50k+ distances.
How do Series 001 socks prevent blisters?
Blisters are caused by friction and trapped moisture. Series 001 eliminates friction through an anatomical midfoot lock (zero slippage) combined with high-performance moisture-wicking yarns that pull sweat away from the skin immediately.
What materials are used in Series 001?
Series 001 utilises a technical synthetic blend engineered for moisture management, high tensile elasticity, and abrasion resistance. Zero cotton is used, ensuring the socks retain no water and do not stretch out when wet.
