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REI Co-op COOLMAX Kids' Socks
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- REI Co-opCOOLMAX EcoMade Active Quarter Socks - Toddlers'/Kids' - 2 Pairs$14.95(38)38 reviews with an average rating of 4.4 out of 5 stars
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Related Expert Advice articles
Synthetic or merino wool socks have subtle differences depending on their intended activity. We'll explain sock fit, features and fabrics.
Learn about clothes that can help you hike more comfortably, and get strategies for cutting the weight and bulk of clothing in your pack.
Learn which clothes to bring backpacking in order to keep your pack light while making sure you'll have everything you need.
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.
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