For purists, an old-school material (real glass) with a protective silicone sleeve and a beer bottle–style mouth. A bit heavy to tote all day, but ideal for your desk. In 14 other colors; 16 ounces.
Clean Bottle the Square
Unscrew the bottom (and the top) for no-fuss washing and quick drying. Flat sides mean it won’t roll away if it falls off the treadmill. Also in black, green, and orange. Stainless steel; 20 ounces.
Blew other filtered models out of the water. One filter lasts for 300 uses ($8 for two replacement filters). Lightweight and squeezable. Also in violet, navy, and aqua. BPA-free plastic; 20 ounces.