We test the best backpacking trowels for lightweight, durable, and efficient cathole digging. Leave No Trace in rocks, roots, and sand with an ultralight potty trowel.
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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 running packs and fast packs for hydration vest style straps, ventilation, ease of use with water bottles and hoses, and more.
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We tested the zero-drop Altra VIA Olympus 2 road running shoe to see if its max cushioning, rocker geometry, and roomy toe box deliver on long-distance comfort and efficiency for the road.
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We test the best men’s hiking underwear and travel underwear for weight, quick-drying, odor control, moisture-wicking, and comfort.
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One of the best ways to move from surviving to thriving in nature is to sleep in a well-ventilated, durable, weatherproof camping tent. We found camping tents that are easy to set up and durable enough for repeated use by teenagers.
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We tested the Altra Torin 8 to see how its zero-drop, high-cushion design performs for daily road runs. Read our findings and review here!
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We tested the Anon M5S Ski Goggles to see how they perform in visibility, comfort, and lens-swapping while skiing and snowboarding. Read our in-depth review before hitting the slopes.
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A bike water bottle holder is perhaps the humblest accessory for your bike. You don’t have to spend much for a bottle cage, and these are worth it.
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We tested 35 SPF lotions to find the best body sunscreen for outdoor activities and best everyday sunscreen with broad spectrum UVA and UVB sun protection.
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We tested the Anon Merak WaveCel Ski Helmet for protection, ventilation, and fit for skiing and snowboarding. Read our review to see if this high-tech helmet is worth the investment.
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We tested the On Cloudsurfer 2 to see how it performs for daily runs. Here's our review of its plush cushioning, breathability, and updated tread.
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In-depth review of the max cushioned HOKA Clifton 10 shoes for running, walking, travel, active recovery runs or long days on your feet. Here's differences from the Hoka Clifton 9.
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We reviewed ultralight backpacking and bike tents from Big Agnes, Six Moon Designs, Nemo, and MSR to determine the best picks for solo and group bikepacking.
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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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Clean drinking water is essential when you head into the backcountry. An effective, reliable water filter or purifier ensures that you have it. We field-tested 20 systems over 6 years to find the one for you.
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Long-term, in-depth review of the ULA Circuit backpacking backpack for lightweight hikers, thru-hiking, and hiking with dogs.
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We tested and reviewed the best GPS dog collars based on accuracy, reliability, usability, tracking range, features, value, fit, and more.
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A long-term, in-depth review of the ULA Catalyst backpacking backpack, our go-to pack for when you need to carry extra food, gear, and equipment.
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As you bag the peak playing Imagine Dragons, everyone at the summit will be ready to party. These best portable speakers will change the way you—and everyone around you— experiences the outdoors.
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