Best Hiking Underwear of 2026: 10 Tested for Men and Women

ExOfficio built the first hiking underwear worth talking about, and the Give-N-Go 2.0 is still the best version three decades later. The formula is simple: 91% nylon, 9% elastane, a 4-way-stretch construction that never pulls or binds, and a fabric that moves sweat off your skin faster than anything else at this weight. A 2.3-ounce pair packs flat in a zip pocket and dries by morning when you rinse it in a stream.

On a 14-day trip down the Oregon Coast Trail I packed two pairs and rotated them the entire way. No rash, no odor problems until day three on a stretch with no creek access, and both pairs returned home in the same condition they left in. If you buy one item from this guide, this is it.

Quarter of a million Amazon reviews at 4.6 stars is the clearest data signal in this category. The Coolzone’s open ventilation zone and moisture-wicking polyester make it a genuine hiking upgrade over standard cotton boxer briefs without requiring you to spend $30 a pair. For day hikers, car campers, and anyone doing shorter trips with laundry access, this is the right call.

It will not outperform ExOfficio on a five-day backcountry stretch. But for 80% of hiking use cases it is the better value by a significant margin.

Inner-thigh chafing on long uphills is a muscle problem, not a skin problem: the skin would be fine if it were not in contact with itself for six hours. The Under Armour Boxerjock solves this with a 9-inch inseam that covers the area that rubs. On the Eagle Creek Trail, where the switchback grade forces your thighs together on every step of a thousand-foot climb, these were the only underwear in the test group that eliminated the problem entirely.

The HeatGear fabric wicks faster than most sport underwear at this price point and the flatlock seams create zero pressure lines under trail pants. At $8.40 per pair in the three-pack this is also the best value in the test for active hikers.

If you are going four or more days without a washing opportunity, merino wool is the right fabric and icebreaker makes the best version. The Merino 150 Anatomica spent four days on the Timberline Trail with me and never developed an odor problem. The anatomical fit panel sits flat under pants without bunching, and the 150 weight merino is light enough for summer but warm enough for the cold mornings that hit at altitude even in July.

Merino is slower to dry and wears out faster than nylon over multiple seasons of machine washing. But if odor control across multiple back-to-back days is the priority, no synthetic at any price beats the icebreaker.

Smartwool built its reputation on merino socks and extended it into underwear with the same engineering principles: high-quality New Zealand merino, flatlock seams, and construction that holds up over years of machine washing without pilling or losing shape. The Active Boxer Brief earned a spot in this list because it is specifically designed for movement, not just warmth.

For fall and spring Oregon hiking where temperatures start at 35F and hit 60F by noon, this is the pair I reach for. The merino keeps you warm at the trailhead without overheating once you are generating heat on the climb.

The ExOfficio Women’s Give-N-Go 2.0 is the female equivalent of our top men’s pick and it earns the same position for the same reasons: ultra-lightweight nylon that dries fast, moves with the body, and resists odor far better than any cotton alternative. The bikini cut sits below a hiking pant waistband without rolling, and the tagless construction means nothing digs into your skin on a hip-belt day.

Two pairs will carry any hiker through a week-long trip with nightly rinses. On longer trips many hikers pack a third pair specifically as the rinse-and-dry spare so they always start each morning fresh.

The icebreaker Siren Hipkini is the pair most often recommended by women doing multi-day Oregon Coast Trail and PCT sections without resupply access. The flatlock seam construction is specifically engineered so no seam sits on the hip-belt contact zone, which eliminates the chafe problem that standard construction creates on long pack days. The 150-weight merino handles the wide temperature swings that characterize Oregon hiking without the synthetic cling that follows a humid climb.

If your hiking wardrobe involves trail tights or form-fitting pants, the choice of underwear dictates whether you spend the day adjusting or forgetting it is there. The Under Armour Pure Stretch eliminates the bunching problem completely. The no-seam construction and four-way stretch fabric moves with the tights without gathering, and the silicone grip on the waistband stays exactly where you put it even on long uphills.

At under $8 per pair this is also the most aggressive value in the women’s picks, putting it in strong contention even for hikers who do not typically wear thong styles on trail.

For day hikers and car campers who want genuine moisture management at a price that does not feel like a gear investment, the Balanced Tech is the answer. Seamless construction, no tag, and a true four-way stretch put it in a different category than the cotton drugstore alternative. The moisture-wicking finish is not as aggressive as ExOfficio’s nylon blend but handles a single-day hike or overnight trip comfortably. At $18 a pack, buying enough to never rewear on a trip costs less than one pair of the premium merino picks.

A three-pack of merino underwear for $33 does not sound real. At icebreaker pricing you would pay $35 for a single pair. METARINO achieves the price through a direct-to-consumer model without sacrificing the core merino properties: natural odor resistance, temperature regulation, and softness against skin. After 12 machine-wash cycles across the test period, no pilling and no shape loss. The mid-waist cut solves the rolling problem that lower-rise cuts create with standard hiking pant waistbands.

The review count is newer than the established brands. But if the quality holds over a longer ownership period, this is the most disruptive price point in the women’s merino category.