Walking & Outdoor Socks Buying Guide
Choosing the Right Socks for Outdoor Activities
A good pair of walking boots or outdoor shoes is important, but the socks you wear inside them can make just as much difference to the comfort of your feet.
Everyday socks aren't normally designed for prolonged walking, changing temperatures or managing the moisture produced during strenuous activity. Purpose-designed outdoor socks can provide cushioning, insulation and moisture management while helping your footwear fit comfortably.
The right sock will depend on the activity, conditions, footwear and how much insulation and cushioning you need.
Lightweight Walking Socks
Lightweight walking socks are ideal for warmer conditions or high levels of activity where a thick winter sock would provide more insulation than you need.
They're particularly useful for spring, summer and autumn walking, although the appropriate sock ultimately depends on the weather and the individual.
A good lightweight outdoor sock should provide enough cushioning for comfort while allowing moisture to move away from the foot.
They're also useful with closer-fitting walking shoes and lightweight boots where there may not be enough space for a thick sock.
Liner Socks
Liner socks are thin socks that can either be worn on their own or underneath another pair of socks.
During warmer weather, a suitable liner sock may provide all the protection you need, particularly with lightweight footwear.
In colder conditions, liner socks can be worn underneath thicker walking socks as part of a layered system.
They can also help manage moisture next to the skin and provide an additional interface between your foot and the outer sock.
When layering socks, make sure the combination doesn't make your footwear too tight. Compressing your feet inside a boot can cause discomfort and may reduce the insulating benefit you're trying to achieve.
Walking Socks
Walking socks are designed to provide more than just warmth.
Many use different knitting constructions across the sock, allowing additional cushioning to be positioned around areas such as the heel, sole and toes while reducing unnecessary bulk elsewhere.
Outdoor socks frequently use blends of natural and synthetic fibres to combine different characteristics.
Wool can provide insulation and moisture-management benefits, while synthetic fibres can improve durability, shape retention, drying performance and fit.
Elastic fibres may also be incorporated to help the sock stay in position around the foot and leg.
A secure fit is important because excessive movement, bunching or creasing inside your footwear can contribute to rubbing and discomfort.
Ski Socks
Ski socks have to perform a slightly different job from conventional walking socks.
As well as providing insulation, they need to remain comfortable inside relatively rigid ski boots for long periods.
Some ski socks incorporate additional cushioning or reinforcement around areas subjected to greater pressure, such as the shin, heel and ankle.
Fit is particularly important.
A ski sock shouldn't be so thick that it makes a correctly fitted ski boot excessively tight. More thickness doesn't automatically mean more warmth if the additional bulk compromises the fit of the boot.
Technical ski socks may therefore use targeted cushioning rather than simply making the entire sock extremely thick.
Mountaineering Socks
Mountaineering socks are intended for colder and more demanding conditions where greater insulation and cushioning may be required.
They are generally heavier than conventional walking socks and are designed to work with substantial mountain or winter footwear.
Traditional mountain socks often use a relatively high wool content combined with synthetic fibres.
A thicker looped construction can trap insulating air while also providing cushioning underneath and around the foot.
Synthetic fibres can be blended with wool to improve durability, elasticity and shape retention.
As with any heavy sock, make sure your footwear has sufficient room. A thick mountaineering sock squeezed into a boot that is too tight can be counterproductive.
Wool and Merino Wool Socks
Wool has been used in outdoor socks for generations because it combines insulation with useful moisture-management properties.
Modern outdoor socks frequently blend wool with synthetic fibres rather than using wool alone.
Merino wool is particularly popular in outdoor clothing and socks because its relatively fine fibres can provide insulation while feeling comfortable next to the skin.
Merino blends can be useful across a surprisingly wide range of temperatures, rather than being restricted to winter use.
Synthetic fibres are often added to improve durability, stretch, drying time and the ability of the sock to retain its shape.
The percentage of wool or merino isn't therefore the only indication of how well a sock will perform. The construction and combination of fibres are also important.
Why Cotton Socks Are Usually a Poor Choice for Longer Walks
Cotton can absorb a considerable amount of moisture and can take time to dry once wet.
During prolonged outdoor activity, this can leave the fabric next to your feet damp from perspiration or external moisture.
For short everyday use this may not matter, but for longer walks it can become uncomfortable.
Outdoor socks generally use wool, synthetic fibres or combinations of the two to provide better moisture management and drying characteristics.
Cushioning and Sock Thickness
Outdoor socks are available with different levels of cushioning.
Rather than simply looking for the thickest sock, consider where the cushioning is positioned and how it works with your footwear.
Extra cushioning may be useful around the:
- heel
- sole
- ball of the foot
- toes
- shin
The appropriate level will depend on the activity and footwear.
A heavily cushioned sock may be comfortable in a roomy walking boot but unsuitable in a close-fitting shoe.
Getting the Right Fit
Outdoor socks should fit closely without feeling restrictive.
A sock that's too large can wrinkle or bunch inside your footwear. One that's too small may place unnecessary pressure on the toes or heel.
Pay particular attention to the position of the heel and toe sections and make sure there aren't folds of material underneath your foot.
The sock and footwear should ultimately be considered as a system.
When trying new walking boots or shoes, it's a good idea to wear the type of socks you expect to use with them.
Socks and Blister Prevention
Blisters are generally associated with a combination of friction, pressure, heat and moisture.
Correctly fitted footwear remains extremely important, but choosing suitable socks can also help.
A well-fitting outdoor sock should stay relatively stable around your foot rather than continually sliding or bunching.
Moisture management is also important because persistently damp skin can become more susceptible to rubbing.
Some walkers prefer a two-sock system using a thin liner underneath a walking sock. Others find that a correctly fitted technical walking sock works better on its own.
There isn't a single system that's best for everyone, so it's worth testing your footwear and sock combination on shorter walks before relying on it for a long-distance trip.
Choosing Socks for Warm Weather
Warm weather doesn't necessarily mean you should wear the thinnest possible everyday sock.
Your feet can produce considerable moisture during strenuous activity, so moisture management remains important.
Look for lightweight outdoor socks or liner-style socks designed for active use.
For longer walks, some cushioning around high-pressure areas can still be beneficial even in hot weather.
Choosing Socks for Cold Weather
For colder conditions, move towards socks offering greater insulation.
This might mean a heavier walking sock, a liner combined with an outer sock, or a dedicated mountaineering sock in more severe conditions.
However, avoid simply adding more and more layers inside your existing footwear.
If additional socks make your boots excessively tight, you may reduce comfort and restrict the space needed for the insulating layers to work effectively.
How Many Pairs Should You Carry?
For a short day walk, one suitable pair may be all you need, although carrying a lightweight spare pair can be useful in wet conditions.
For multi-day walking or camping, spare socks become more important.
Being able to change out of wet or heavily perspired socks can improve comfort, while the removed pair can be dried when conditions permit.
A dry pair reserved for use around camp can also be particularly welcome after a wet day.
Caring for Outdoor Socks
Follow the washing instructions supplied with the particular socks.
Different fibre blends can require different temperatures and drying methods, particularly where wool or merino wool is used.
Avoid assuming that all outdoor socks can be washed in exactly the same way.
Correct care can help preserve their fit, elasticity and performance.
For more information, see our Walking Socks Washing & Cleaning Guide.
Which Outdoor Socks Should I Choose?
Start with your activity, footwear and expected conditions.
For summer walking and lightweight footwear, consider lightweight walking socks or suitable liner socks.
For general hiking and hill walking, a dedicated walking sock with appropriate cushioning provides a versatile option.
For skiing, choose socks designed to work inside ski boots, with appropriate fit and targeted cushioning.
For cold-weather mountaineering, heavier insulated mountain socks may be more appropriate.
For variable or colder conditions, a liner and outer sock combination can provide additional flexibility where your footwear has sufficient room.
The most expensive or thickest sock isn't automatically the best choice. A correctly fitted sock that's appropriate for your footwear, activity and conditions will generally be the more useful option.