How to Choose Quality Socks

How to choose quality socks?

Socks are the most underrated thing you wear. A good pair keeps your feet warm, dry and blister-free all day. A bad pair goes thin at the heel, slides down into your boot and smells by lunchtime.

Here's what separates the two and how to pick a pair that lasts.

Key Takeaways

• Fibre matters most. A merino or wool blend keeps feet warmer, drier and fresher than cotton, and lasts longer.
• Look at the build. A dense knit, strong heels and toes, and stretch that holds after washing separate a good sock from one that lasts a season.
• Match the height to your footwear. No-show for sneakers, crew for everyday, mid or high-rise for boots. Your sock should always sit taller than your shoe.
• For tramping, think dry and snug. Merino, a secure heel and the right thickness for your boots are your best defence against blisters.
• Size by your shoe range. Between sizes, size up for boots, thick socks or wide feet.
• Wash cool, skip the dryer. Heat is what shrinks wool socks and kills their stretch.

What makes a quality sock?

Fabric. The fibre decides how warm, dry and comfortable your feet are, and how long the sock lasts. Natural fibres like merino and wool do most of the work. A little nylon and elastane adds strength and stretch.

Construction. Look at how the sock is knitted. A denser knit wears longer and holds its shape. Thin, loose knits wear through fast. Smooth, flat toe seams stop rubbing.

Heel and toe reinforcement. The heel and toe take the most wear. Quality socks add extra strength or a tougher knit in those spots, so they don't wear through first.

Elasticity retention. A good sock still grips your leg and foot after dozens of washes. Cheap socks lose their stretch, slip down and bunch in your shoe. A bit of elastane in the blend, and a well-made cuff, keep them in place.

The short version: a sock that lasts years has good fibre, a dense knit, strong heels and toes, and stretch that doesn't give up. A sock that lasts a season usually skimps on at least one.

What fabric is best for socks?

Merino wool

• Comfort: soft and fine, with no itch.
• Moisture: pulls sweat away from your skin and still feels dry when damp.
• Durability: good, especially blended with nylon.
• Warmth: warm when it's cold and breathable when it's hot. It also resists odour naturally, so you can wear it longer between washes.

Cotton

• Comfort: soft and familiar.
• Moisture: soaks up sweat and holds it, so feet stay damp and are more likely to blister.
• Durability: fair, but it thins and loses shape over time.
• Warmth: poor once wet.
  

Synthetic (nylon, polyester, acrylic)

• Comfort: smooth, but can feel clammy.
• Moisture: wicks sweat and dries fast.
• Durability: very tough.
• Warmth: moderate, and it tends to hold onto smells.

Bamboo

• Comfort: very soft and silky.
• Moisture: absorbs well, but slow to dry.
• Durability: lower than wool or synthetics, so it wears faster.
• Warmth: light. Better for mild weather than cold.
  

Blends often give you the best of both. Merino or wool does the comfort and moisture work, while nylon and elastane add strength and stretch.

Are merino socks better?

For most people, in most conditions, yes.

Where merino wins

• It keeps feet drier. Merino moves sweat away from your skin and keeps insulating when damp. Cotton just soaks it up.
• It handles temperature. It's warm on a frosty morning and breathes on a hot afternoon. One sock covers most of the year.
• It fights smell. Merino naturally resists odour, so it's great for long days, travel and multi-day walks.
• It's comfortable. Fine merino is soft against skin, without the scratch of coarser wool.
  

Where it falls short

• It costs more upfront, though it usually lasts longer.
• Pure merino isn't as tough as synthetics. That's why the best merino socks are blended with nylon for strength.
• It needs a bit of care in the wash. Hot water and the dryer can shrink it.
  

For work, walking, tramping and everyday wear, a merino blend is hard to beat.

What types of socks are there?

No-show (invisible)
Sits below the top of the shoe so it can't be seen. Best with sneakers and low shoes. A silicone heel grip stops it slipping off.

Ankle
Sits just at or above the ankle bone. Good for sneakers, running and summer.

Crew
Sits mid-calf, about a hand's width above the ankle. The everyday all-rounder for work shoes, casual shoes and walking.

Calf (mid-rise)
Sits at or just below the calf muscle. Good for boots, tramping and cooler days.

Knee-high (high-rise)
Reaches up to just below the knee. Good for tall boots, gumboots and cold conditions, and protects your shins from rubbing.

The rule of thumb: your sock should always be taller than your shoe or boot. Otherwise the boot rubs straight on your skin.

What are the best socks for tramping?

Tramping is hard on feet: long days, heavy packs, wet tracks and stiff boots. The right sock makes a big difference.

Cushioning. Look for extra padding under the heel and ball of the foot, where the impact is. It reduces fatigue over long days.

Moisture wicking. Wet feet blister. Merino pulls sweat away from your skin and stays warm even if you cross a river. Avoid cotton on the track.

Blister prevention. Blisters come from friction and moisture. A sock that fits snugly, without wrinkles, and has a smooth toe seam helps stop rubbing. A heel that stays put and doesn't slip makes a big difference.

Thickness for your boots

• Light walking shoes or trail runners: a thinner sock, crew or ankle height.
• Mid-weight tramping boots: a medium-thick sock at mid-calf height.
• Heavy, stiff boots or gumboots: a thicker, taller sock for more padding and protection from rubbing.

Always try your boots on with the socks you'll wear on the track. A thicker sock can change how your boots fit.

Tip: pack a spare pair for multi-day trips. Changing into dry socks at the hut is one of the best feelings there is.

How to read a sock size guide

Socks are sized by shoe-size range, not exact size, because the knit stretches to fit. A typical guide looks like:

• Small: men's 2 to 5, women's 4 to 9
• Medium: men's 6 to 10
• Large: men's 11 to 13

Between sizes?

• Size up for longer toes, thick socks or tramping, so your toes aren't squashed in boots.
  
• Size down if you prefer a snug fit and the sock has plenty of stretch.

Foot width matters too. Wide feet can stretch a sock across the foot, pulling the heel forward and making it slip. If you have wide feet, sizing up often gives a better fit.

A good fit looks like this: the heel pocket sits right on your heel, there's no bunching at the toes, and the cuff stays up without digging in.

How to care for quality socks

• Wash cool. Wash merino and wool socks in cool or lukewarm water on a gentle cycle. Hot water shrinks wool.
• Turn them inside out. That's where sweat and skin build up, so they come out cleaner. It also reduces pilling on the outside.
• Use a wool-safe detergent. Skip bleach and fabric softener. Softener coats the fibres and stops them wicking moisture properly.
• Skip the dryer. Heat is the main cause of shrinking and lost stretch. Lay socks flat or hang them to dry, out of direct heat.
• Rotate your pairs. Giving each pair a day off lets the fibres recover and makes them last longer.
• Darn small holes early. A small hole is easy to fix. Left alone, it'll grow fast.

Which sock brand should I choose?

Look for a brand that ticks these boxes:

• Natural fibres first. Merino or wool as the main fibre, blended for strength, not the other way around.
• Clear fibre content. A good brand tells you exactly what's in the sock.
  
• Built for real use. Reinforced heels and toes, a secure fit, and a range of heights for different shoes and boots.
  
• Honest sizing. A clear size guide that covers both men's and women's sizes.
• Know where it's made. You should be able to find out who makes the sock and where.
• Stands behind the product. A guarantee that covers quality, not just a quick return policy.

Swanndri's sock range

Socks are one of the few things we still make right here in New Zealand, from New Zealand wool. They're built for farm days, long walks and everything in between.

For tramping and boots

• Herculan Technical Mid Socks – a mid-rise tramping sock made from tough New Zealand Strongwool, with an ergonomically mapped footbed, extra comfort and durability in high-impact areas, and reduced slip at the heel and toe. Made in New Zealand.
• Herculan Technical High Socks – the same technical build in a high-rise length for tall boots and colder trips.
• Classic Merino Boot Socks – a merino blend built for warmth and softness, moisture-wicking and stretchy, with a snug fit that moves with your foot. Made in New Zealand.
• Universal Boot Socks V2 (triple pack) – a hard-wearing wool blend work sock for everyday boot wear.

For everyday

• Colombo Check Merino Socks – a merino-rich sock in our custom Swanndri check, built for all-day comfort, warmth and dryness. Made in New Zealand.
• Merino Dress Socks – a smart merino sock for work shoes and the office.
• NuYarn Crew V2 Socks – a crew-height everyday sock.

For sneakers

• Knowler Merino Invisible Socks – a merino-rich invisible sock for sneakers, with a non-slip silicone heel grip so it stays put. Made in New Zealand.

Shop all Swanndri socks