3dRose wb_164891_1 Pi Symbol Math Sign Mathematical Black and White Mathematics Number Sports Water Bottle, 21 oz, White Made of aluminum; Capacity: 20oz 2 twist on caps - 1 easy-flow drinking spout and 1 standard cap; Carabineer clip also included Custom printed high gloss image sublimated directly to white glossy exterior surface Fits most cup holders Not intended for dishwasher or microwave use