We tested lightweight rain jackets for six years to find the best waterproof shells for hiking, backpacking, running, commuting, and travel.
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A former D1 runner and coach tested women’s running shirts on roads and trails to find the best tees, tanks, sun hoodies, and long sleeves of 2026.
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We test and review the best big and tall outdoor apparel including men’s plus size hiking outdoor gear including pants, jackets and base layers.
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We tested the best plus-size outdoor clothing for hiking and camping, including hiking pants, rain jackets, fleece, base layers, footwear, sports bras, and more.
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The best men's running shorts of 2026, tested on road and trail for comfort, liner quality, pocket usability, and chafe-free fit. Here are our picks.
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We tested the rabbit FKT running shorts to evaluate fit, liner comfort, pocket usability, and performance across short runs, long training days, and speed work.
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We review dozens of sports bras to find the best supportive, most comfortable and affordable sports bras for running, hiking, and the outdoors. For chest sizes AA-D (we’ve got a D+ review too!).
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Good mountain bike gloves balance comfort, protection, durability, and breathability. We trail-tested dozens to bring you this review of the best MTB gloves.
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We asked Treeline Review writers about their go-to sports bras for hiking and backpacking. Here's what they found in their testing, and the favorites.
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Find the best women's biker shorts from expert testing and reviews. We tested biker shorts for hiking, running, and outdoor activities with fit guides for every body type.
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The REI Flash Shade Hoodie is lighter and faster-drying than the beloved REI Sahara. We tested both to help you pick the right UPF 50 sun hoodie for the trail.
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We review the best socks for runners— running socks to prevent blisters, best socks for hot weather runs, best socks for cold weather, compression, and toe socks.
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We interviewed dozens of PCT and CDT hikers to consider dozens of shorts models. Then we tested them over 1000s of miles of thru-hiking to find the best pair of shorts for thru-hikers of all sizes and shapes.
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Sun protection is essential when spending time outdoors, so we trail-tested UPF clothing to bring you this review of the 11 best sun shirts for men and women.
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After testing dozens of socks over thousands of miles of hiking, here are the best wool and synthetic hiking and backpacking socks — hiking socks to prevent blisters, the best socks for hiking in hot weather, compression, and more.
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We test 19 pairs to find the best women's hiking underwear. No riding, creeping, wedgies, or rolling waistbands. No chafing or rubbing. No itchy material. Just quick drying and moisture-wicking, odor-free undies.
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We tested the best sun hats hiking to find the best sun hats for hiking, backpacking, and other outdoor activities.
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The perfect running hat is so comfortable that you have to periodically check if it’s still on your head, keeps salty sweat out of your eyes, dries quickly, and is easily adjustable on the fly.
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Finding the perfect hiking shirt isn't just about comfort and durability—it's about finding a companion that stands the test of time and terrain. The search for the ultimate hiking shirt led us to test over 10 shirts to find the best in terms of performance, versatility, and more.
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We tested 15 hiking shirts on trails from Virginia to Maine to find the best men's hiking shirts–quick dry, lightweight, long-sleeves, t-shirts, and sun hoodies