Do away with plastic water bottles and go the reusable route with the Nalgene OTG. Made of super-tough Eastman Tritan polycarbonate, the OTG is the ultimate in mobile hydration, with a size that fits in most car cup holders, bike cages, and even exercise machines. In addition, the bottle offers an easy flip-top lid, so you can open the top with one hand for easy drinking on the go. Perhaps most importantly, the bottle's BPA-free construction is impact-, odour-, and stain-resistant, so you can enjoy your liquids without the dreaded plastic taste and smell. The OTG bottle--which boasts a sleek, slender profile--holds 710mls and weighs 0.1kg.