By now you've probably heard about the BPA or bisophenol chemical most often found in polycarbonate plastics. Bisphenol A is an estrogen-like chemical used to make plastic. These plastics are used in many plastic water bottles, baby bottles and sippy cups. I learned about BPAs a couple of years ago and have felt uneasy giving my daughters' plastic sippy cups and baby bottles since then. So, I was ecstatic when I discovered my first SIGG aluminum bottle and promptly purchased a couple. Thankfully, there are other companies entering the scene with some nicely designed aluminum or stainless steel bottles, so I thought I would showcase a few. SIGG is the most popular brand, made of aluminum but internally coated with an inert coating so there is no aluminum leaching into the bottle (thanks Molly!) and they offer additional accessories such as kid handles and a neoprene jacket. Klean Kanteen, made of stainless steel, also has additional accessories and other lid options, The Safe Sippy, also made of stainless steel, has a straw-like spout (proven to be better for speech development) and then I had to mention the Shinzi Katoh drinking bottles for their fantastic illustrations.