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Smartwool Merino Sport
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Related Expert Advice articles
Choose a fabric type
- Wool: Stays warm when wet, resists odor and wicks moisture
- Synthetic (nylon, polyester or acrylic): Ideal for sensitive skin, trap warmth and wick moisture.
How much cushioning do you want?
- No cushioning: Best for tighter-fitting performance boots that have a tighter fit or maximum ground feel
- Light cushioning: Shin padding with minimal cushioning on the balls of the feet, often with reinforced toes and heels
- Medium cushioning: Added padding for warmth and impact absorption; ideal for cold conditions or looser-fitting boots
Length
- Knee high: Most socks for skiing and snowboarding go up to the knees to help protect from shin bang
- Crew: Cross-country skiers and snowshoers may prefer shorter hiking socks
Running is more comfortable with the right clothing. This article highlights fabrics and features for warm weather and winter running.
We list our 8 favorite socks for hiking, backpacking, kids, compression and more.
Read full article: The 8 Best Hiking Socks of 2025: Staff Picks
How to Choose Hiking Socks
Select your sock height
- No-show: Little protection against skin-to-boot abrasion. Best with low-cut footwear like trail-running or light hiking shoes
- Ankle: Covers your ankle bone and offers some protection. Best for low- to mid-cut shoes and boots
- Crew: Extends a few inches above ankle bone and protects against boot abrasion. Good for boots or shoes
- Knee-high: Typically used for mountaineering, provide warmth and protection against high-cut boots
Choose your preferred cushioning level
- None: Ultralight, breathable socks designed for use in hot weather or as sock liners
- Light: Moisture-wicking and comfortable at the heel and ball of your foot; relatively thin and better for warm conditions
- Medium: Targeted cushion in the heel and ball of the foot for hiking and backpacking; warm enough for moderate to cold conditions
- Heavy: Thickest and most cushioned; best for long trips, tough terrain and cold
Select a fabric
- Choose a moisture-wicking and quick-drying material like wool, polyester or nylon.
- Spandex is often added for its elastic properties to prevent bunching or wrinkling.
- Cotton isn't recommended as it absorbs moisture, takes longer to dry and cools down quickly.
Find your fit
- Choose based on your foot size, not shoe size.
- If you're between sizes, size down to avoid excess material that can bunch up and cause blisters.
- Socks should feel snug but not tight, and the sock's heel cup should naturally line up with your heel.
Fabrics
- Synthetic: moisture-wicking, quick drying, durable, but can hold on to odor
- Wool: moisture-wicking, odor-resistant, cooling in warm weather, can be less durable
Styles
- Bikini: less rear coverage, thinner waistband, higher-cut leg
- Briefs (women's): full-cut briefs offer more coverage in front and back; hipsters offer medium front coverage and back with higher rise
Briefs (men's): close fit and good support, but less thigh coverage
- Boxer brief or boy shorts: snug fit, good coverage, longer cut extends down to the upper thigh
- Boxers: looser fit, added coverage can prevent chafing but prone to bunching
- Thongs: lightweight and quick-drying but provide the least coverage
- Sports bras: compression and support during high-output activities like hiking and running
Which material is best?
- Wool: highly moisture-wicking and odor-resistant
- Synthetic: durable and less expensive
- Silk: soft and lightweight for casual activities
Match the temp to the trek
- Lightweight layers: best for moderate to cool temperatures
- Midweight layers: best for cold temperatures
- Heavyweight layers: best for below-freezing temperatures
Find your fit
- Must be close to skin to efficiently wick sweat; should fit comfortably snug
- Base layer is for moisture control; your mid layer is for warmth



























