Before that 26.2-mile run or a simpler jog around the park, runners might want to add this Bobble reusable water bottle to their equipment. It’s made from recycled plastic and has a built-in charcoal filter. After an initial rinse, to flush out charcoal particles, the bottle, which can be squeezed and has a squirting top and snap-in cover, can be reused, but should be washed regularly. It was created by the industrial designer Karim Rashid. The manufacturer says that the plastic complies with federal consumer standards for reuse, and that it is free of BPA, PVC and phthalates.