The idea for this article came from a simple Facebook question in a popular outdoor group, What is the one rule you always follow when heading into the backcountry?
Our answer was short and direct, NO COTTON.
That response sparked a follow-up question. Why not wear cotton?
It is a fair question, especially since cotton feels comfortable, familiar, and inexpensive. But in the backcountry, comfort at the trailhead does not always translate to safety and comfort miles from the car. Here is why experienced backpackers, guides, and outdoor educators avoid cotton when it matters most.
Cotton Holds Moisture
Cotton absorbs water easily. Sweat, rain, creek splashes, or even heavy humidity soak into the fabric and stay there. Once wet, cotton dries very slowly, especially in shaded forests, narrow valleys, or cool conditions common in Arkansas for much of the year.
That trapped moisture pulls heat away from your body. Even on a mild day, this can lead to dangerous heat loss once activity slows or the sun drops.
Cotton Increases Hypothermia Risk
Many people associate hypothermia with winter conditions, but it can happen in temperatures well above freezing. Wet cotton clothing accelerates heat loss and leaves you vulnerable when weather changes or unexpected delays occur.
In the backcountry, where shelter may be limited and help is far away, clothing that stays wet becomes a serious safety issue.
Cotton Causes Chafing and Discomfort
As cotton gets wet, it becomes heavy and loses its structure. The fabric clings, bunches, and rubs. Over a long hike or multi day trip, this can lead to painful chafing, hotspots, and skin irritation.
What feels fine for the first mile can become miserable by mile ten.
Cotton Adds Weight
Wet cotton weighs significantly more than dry cotton. On a backpacking trip, every ounce matters. Waterlogged clothing adds unnecessary weight to your pack and to your body, making climbs harder and fatigue set in faster.
Cotton Performs Poorly in Changing Conditions
Backpacking often means moving through a wide range of conditions in a single day. Warm climbs, cool descents, shaded hollows, breezy ridgelines, and cold evenings at camp are all common.
Cotton does not insulate when wet and offers no temperature regulation. Once damp, it simply stays cold.
Better Choices for the Backcountry
Most experienced backpackers choose synthetic fabrics or merino wool for clothing worn on the trail.
Synthetic materials wick moisture away from the skin and dry quickly. Merino wool does the same while also insulating when wet and resisting odor over multiple days. Both options keep you warmer, drier, and more comfortable when conditions change.
A Natural Option for Reducing Micro Plastics
For hikers who are concerned about micro plastics in the environment, merino wool offers a practical alternative to synthetic fabrics. Unlike polyester or nylon, merino fibers are naturally biodegradable, so they break down in soil and water without leaving long lasting plastic particles behind. Choosing merino wool for base layers, socks, and mid layers helps reduce the amount of synthetic fiber shedding that occurs during wear and washing. It is a way to stay warm, dry, and comfortable on the trail while also supporting healthier waterways and ecosystems. More here.
Is Cotton Ever Okay?
Cotton is not banned from the outdoors, but it should be used intentionally. A cotton shirt or pair of shorts can be comfortable camp clothing once you are done hiking for the day and have dry layers to change into.
For anything worn while moving on the trail, especially in remote areas, cotton is best left at home. Here is an article from the National Outdoor Leadership School on When to Wear Cotton Outdoors.
The Bottom Line
The “no cotton” rule is not about gear snobbery or spending more money. It is about reducing risk and increasing comfort when you are far from help and dependent on what you carry.
When conditions are unpredictable and margins are thin, clothing that stays warm, dries fast, and works with your body is one of the simplest safety choices you can make in the backcountry.
This article was originally published on ArkansasOutside.com, your trusted source for outdoor news and updates in The Natural State. Unless otherwise credited, all photos included in this piece are the property of Arkansas Outside, LLC. We take pride in sharing the beauty and adventures of Arkansas through our lens—thank you for supporting our work!
