Rusty Allen of San Diego, California is the industrial designer behind Gobie H20, a 22-ounce water bottle that comes with a built-in filter so you can fill your water bottle with tap water wherever you go. The design includes a rubbery side that makes the BPA-free bottle squeezable and the filter is composed of charred coconut shells so it truly is a compostable product. Another selling point is the money consumers will save, and the small footprint they will have, by not using bottled water.
Since Shark Tank, the Gobie H20 website (http://gobieh2o.com) is no longer active and the brand is no longer available on Amazon. However, there is a comparable product under the OKO H20 brand on Amazon. (See above.)