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Ken Knapp

REI Editor Emeritus Ken Knapp became a member in 1977 and went on to work for more than 36 years at the co-op. A father of daughters (thriving) and monitor of marmots (threatened), Ken is also a big fan of sustainability and sharing the ball.

Latest Articles

  • Buying Advice

    How to Choose Base Layers

    2271 reviews with an average rating of 4.4 out of 5 stars

    Choosing the right long underwear (base layer) is essential—learn how moisture-wicking materials, fabric weight and fit affect comfort in the outdoors.

  • Buying Advice

    How to Choose Rainwear

    1460 reviews with an average rating of 4.2 out of 5 stars

    Use this guide to find the best rain jacket for your needs—with REI expert tips on waterproofing, breathability and key features.

  • Buying Advice

    How to Choose a Sleeping Pad for Camping and Backpacking

    954 reviews with an average rating of 4.4 out of 5 stars

    Learn about the different types of sleeping pads, the importance of a sleep system, how to choose the right insulation for your trip and more.

  • Buying Advice

    Animal Welfare and Outdoor Gear

    52 reviews with an average rating of 4.3 out of 5 stars

    Learn how animal welfare issues, like the Responsible Down Standard and Responsible Wool Standard, relate to outdoor gear and clothing.

  • Buying Advice

    How to Choose Insect Repellents

    363 reviews with an average rating of 4.3 out of 5 stars

    Learn how to combat mosquitoes, ticks and flies with DEET, picaridin and natural lotions, air-emitted repellents and permethrin-treated clothing.

  • Buying Advice

    How to Choose Mountaineering Boots

    13 reviews with an average rating of 4.1 out of 5 stars

    Mountaineering boots are a big investment. Learn when to buy versus when to rent, and what to consider when buying your first pair.

  • Buying Advice

    How to Choose a Hammock

    255 reviews with an average rating of 4.5 out of 5 stars

    Whether you want a hammock for relaxing during the day or to replace your tent while camping, hammocks are a comfortable and popular way to hang out in nature. Learn how to choose the right one for you.

  • Buying Advice

    How to Choose a Water Filter or Purifier

    555 reviews with an average rating of 4.4 out of 5 stars

    Learn about backcountry water risks, ways to treat water and factors to consider when choosing a filter, purifier or other treatment method.

  • Buying Advice

    How to Choose and Use an Avalanche Transceiver

    210 reviews with an average rating of 4.5 out of 5 stars

    Learn how to choose and use an avalanche transceiver for backcountry safety. Explore features, types, training tips and top-rated models at REI Co-op.