A case of 15 Buoy Bottles of various colors. (Tell us if there are colors you want or colors you don't.) Else we'll pick a great mix. The Buoy bottle, holds 30-oz of water, but weighs only 7 ounces empty: So light, you only carry the water. It opens in the center to allow for dishwashing: no more stale water bottle musk. The thumb-loop allows it to be carried comfortably. The unique silhouette speaks for itself. At the same time, the Buoy bottle has the lowest carbon footprint of any water bottle on the market. It's made of 100% Oceanbound plastic collected in North America and manufactured at a solar-powered plant in California. If you credit the carbon that was saved by recovering the plastic before it entered the ocean, the Buoy bottle has a negative carbon footprint. Buoy’s reusable water bottle – 30oz / 0.9L 100% recycled Ocean-bound plastic HDPE 100% recyclable Made in USA at a plant powered by solar Food safe/BPA free – FDA-approved Dishwasher safe Microwave safe Leak-proof