I’ve had a couple of one-liter, wide mouth Nalgene bottles since my big backpacking trip in 2002, which followed the John Muir Trail north to Tuolumne Meadows for about 70 miles (113 km).<br />n<br />nOver the past two years or so, I’ve been using one of the bottles as my daily water bottle, refilling it with filtered tap water. It’s been durable and has served me quite well. The one thing I didn’t like so much was the wide mouth, which is good for filling with a water filter/pump in the backcountry, but makes for lots of spillage down the button line of your shirt in regular use.<br />n<br />nThese bottles are the old, polystyrene types, with the number 7 stamped on the bottom. As you may have heard, there has been growing concern over these kinds of plastic drinking containers since they are made with BPA, <a href=”http://www.thegreenguide.com/doc/114/bpa” title=”bpa backstory”>a chemical that is linked</a> to a variety of health issues.<br />n<br />nI have been meaning to get a new bottle to use as my daily drinker, and finally got around to it recently, finally getting over to REI, which has a good selection of both the newer, BPA-free Nalgenes as well as some of the new bottles made with other materials, such as stainless steel and aluminum. Stainless steel sounds pretty good, but since I’ve been using a small aluminum version at work, which they provided for us, I’ve found that it gets really cold when filled with really cold water. And, due to that poor insulating qualities of the metal, the water temperature achieves room temperature pretty quickly too.<br />n<br />nThe new plastic BPA-free Nalgene is what I finally decided on, and I got the wide mouth again due to my wanting to use it with a water filter on a future backpacking trip. Not only that, but I also found a cool device that screws into the wide mouth, and has a smaller opening to drink from, and screws securely to the wide mouth cap. It’s called the capCAP and is made by a company called humangear. <a href=”http://humangear.com/capCAP.html” title=”bottle cap by humangear”>Here’s a link</a>.<br />n<br />nI’m pretty happy with this set up. I highly recommend it.