Every type of sock, ranked: performance, cost, and what they're actually made from
Published by Samantha, founder of Teddy Locks
I spent 14 months developing Teddy Locks socks before selling a single pair. A significant part of that time was spent testing every type of sock I could find — different materials, different constructions, different price points — because I needed to understand what I was competing with before I could decide what I was trying to build.
This is an honest ranking of the main sock categories available in the UK, covering what they are made from, how they perform, what they cost, and what the material choices mean for the environment and the people who make them.
Cotton socks
The default. Most high street socks — M&S, John Lewis basics, supermarket multipacks — are primarily cotton - but with a percentage of nylon or polyester for durability and elastane for stretch.
Performance: Cotton absorbs moisture and holds it. This is fine for low-activity everyday wear where your feet stay relatively dry. For walking, running, or any activity that generates foot heat, cotton becomes a problem quickly — wet feet blister, and cotton socks stay wet. Cotton also loses its shape over time as the fibres break down through washing. A £3 cotton sock will typically last one to two years with regular washing before it becomes thin and holed.
Cost: The cheapest category by far. Supermarket multipacks can bring the price per pair below £1. M&S and John Lewis cotton basics sit at £3–6 per pair.
Ethics and environment: Conventional cotton is one of the most water-intensive and pesticide-dependent crops in agriculture — up to 20,000 litres per kilogram of fibre, and roughly 4.4% of global pesticide use. The fast fashion supply chain for cotton socks typically runs from cotton farms in India or Turkey, to spinning mills in South Asia, to knitting factories in Bangladesh or China, to a UK warehouse. The labour and environmental standards at each stage are highly variable and rarely audited at the sock price point.
Who should buy them: People who want cheap, comfortable, everyday socks for low-activity use and are not concerned about longevity or environmental credentials. Fine for the sock drawer if bought with clear eyes about what they are.
Bamboo socks
Almost always bamboo viscose — not bamboo fibre. As covered in detail in an earlier post, bamboo viscose is produced through a chemical process using carbon disulfide that is significantly more polluting than the "natural bamboo" marketing implies. The finished fibre is classified as rayon. Brands are legally required to label it as bamboo viscose or bamboo rayon in the UK.
Performance: Genuinely soft, often softer than cotton at a similar price point. Bamboo viscose has reasonable moisture-wicking properties. It is less durable than cotton — the viscose process produces shorter fibres — and bamboo socks tend to pill and thin faster.
Cost: Typically £5–12 per pair at independent and sustainable-positioned brands. Slightly above high street cotton basics.
Ethics and environment: The softness is real. The sustainability credentials are largely not. The viscose manufacturing process generates carbon disulfide emissions and chemical wastewater at many production facilities, primarily in China and South-East Asia. The bamboo plant itself is sustainable — but what happens to it in manufacturing undoes much of that advantage. Bamboo lyocell would be a different story, but almost no bamboo sock on the market uses it.
Who should buy them: People who want softness and are prioritising comfort over either performance or genuine environmental credentials. Worth being clear-eyed about what "bamboo" means on a sock label.
Wool socks
Either pure wool or, more commonly in performance and outdoor categories, Merino wool — a finer, softer fibre from Merino sheep, primarily in Australia and New Zealand. Often blended with nylon for durability, as pure wool socks wear through relatively quickly at the heel.
Performance: Excellent for cold-weather, outdoor, and high-activity use. Wool regulates temperature — it keeps feet warm when cold and cool when warm. It is naturally antibacterial, meaning it can be worn multiple times between washes without odour. It wicks moisture without holding it. Merino specifically is fine enough not to feel scratchy.
Cost: £12–30 per pair for quality Merino. The durability justifies the price over a multi-year lifespan, but the upfront cost is significant.
Ethics and environment: Wool production has a genuinely high carbon footprint at source — approximately 19–25 kg CO₂ per kilogram of fibre, driven primarily by sheep methane emissions. However wool is the only fibre for which a functioning closed-loop recycling system exists in the UK, and it produces no microplastics. Mulesing — the removal of skin folds around the tail to prevent fly strike — is a welfare concern in Australian Merino production. Brands using non-mulesed Merino typically say so. It is worth asking if it matters to you.
Who should buy them: Anyone who walks, hikes, or spends time outdoors. Worth every penny for cold weather or high-activity use. Overkill for everyday office wear.
Nylon / polyester sports socks
Technical synthetic socks designed for running, cycling, gym, and sport. Typically a blend of nylon or polyester with small amounts of elastane, often with cushioned zones, arch compression, and targeted ventilation panels.
Performance: Engineered for specific performance — moisture management, blister prevention, compression, durability. A good technical running sock makes a measurable difference in comfort over long distances. Not designed for everyday wear — the cushioning and compression are optimised for active use.
Cost: £8–20 per pair. More specialist constructions (trail running, cycling) at the upper end.
Ethics and environment: Virgin polyester and nylon are petroleum-derived, non-biodegradable, and shed microplastics in washing. At this price point, very few technical sock brands offer certified recycled content, though some (Teddy Locks is an exception) are beginning to move in this direction. The certifications rarely exist at this tier.
Who should buy them: Runners, cyclists, and high-performance athletes for training and racing. Not a category where sustainability credentials are well developed yet.
Recycled plastic / sustainable performance socks
Performance socks made using certified recycled fibres — typically REPREVE® recycled polyester from plastic bottles, sometimes with TENCEL™ lyocell or recycled nylon. Designed to combine the performance properties of synthetic fibres with a significantly reduced environmental footprint.
This is the category Teddy Locks occupies. REPREVE® for moisture management, TENCEL™ for softness, a reinforced heel and toe construction for durability, and a small amount of spandex for stretch and recovery. Certified to the Global Recycle Standard, SCS Recycled Content Standard, and Oeko-Tex Standard 100.
Performance: Moisture-wicking, fast-drying, antibacterial. The REPREVE polyester handles sweat efficiently — significantly better than cotton for walking and everyday active use. The TENCEL content adds the softness against skin that pure recycled polyester lacks. The welt is engineered specifically not to slip.
Cost: £8.50 per pair at Teddy Locks (2-pair pack). More than supermarket cotton basics, comparable pricing to quality bamboo socks, less than Merino wool.
Ethics and environment: REPREVE polyester reduces greenhouse gas emissions by up to 60% and freshwater consumption by up to 67% compared to virgin polyester. The certifications are independently audited and annually renewed. Manufacturing is within a 250-mile supply chain in North Carolina. Not biodegradable — this is an honest limitation covered in detail elsewhere on this blog.
Who should buy them: People who want a sock that performs well for everyday wear and walking, is made with verified recycled materials, and lasts. The sweet spot between performance, price, and environmental credentials.
Compression socks
Graduated compression garments — tighter at the ankle, progressively looser up the leg — designed to improve circulation. Medical-grade compression is prescribed for clinical conditions. Consumer compression socks are used for travel, long-distance running, and standing jobs.
Performance: Effective for their specific purpose. If you stand all day, travel frequently on long flights, or run ultra distances, a quality compression sock significantly reduces fatigue and swelling. For everyday wear the compression serves no functional purpose.
Cost: £15–40 per pair for quality compression. Medical grade significantly more.
Ethics and environment: Typically high synthetic content — nylon and elastane — required to generate consistent compression. Limited recycled content options in this category.
Who should buy them: Travellers, healthcare workers, runners. Specialist use rather than everyday.
Novelty and fashion socks
Patterned, colourful, or novelty socks positioned as a style accessory rather than a performance product. Gift market staple. Almost universally cotton or cotton-polyester blend.
Performance: Functional but not optimised. The patterns are the point.
Cost: £5–15 per pair, often sold as gifts.
Ethics and environment: Highly variable and rarely transparent. The gift market does not demand supply chain accountability.
Who should buy them: Anyone who enjoys wearing socks as a style statement. Worth checking fibre content if the environmental credentials matter.
The honest ranking
If you are buying one type of sock to cover most situations, ranked in order:
Best overall for everyday active use: Recycled performance socks — the right combination of moisture management, durability, environmental credentials, and cost.
Best for outdoor, cold weather, and high activity: Merino wool — unsurpassed performance and the best end-of-life profile of any non-recycled option.
Avoid for performance: Bamboo viscose — the softness is real, the sustainability is not, and it degrades faster than alternatives.
Avoid entirely: High-acrylic blends — the worst environmental profile of any common textile fibre, significant microplastic shedding, poor durability. Found in cheap knitwear and budget sock ranges.
Free UK delivery on orders over £25.
Leave a comment