Amazon.com The Nalgene Silo features the same profile as the company's bestselling 32-ounce Wide Mouth bottle, so it will fit in your packs' side pockets, but its 1.5-liter capacity means you can tote more water. Like all Nalgene products it is guaranteed for life. Features Volume graduation markers Wide mouth BPA-free Made in USA Dishwasher safe 1.5-liter (48-ounce) capacity Anatomy of a Nalgene Bottle Threads: Nalgene bottles and caps feature continuous, straight shouldered semi-buttress threads for increased contact area on the surface. This allows for greater tightening force without stripping threads. Cap: Durable caps are designed and built to perfectly mate with their respective containers. There's no separate liner to wear, crease, fall out, or leak, and the seal ring is molded directly into each cap. FDA Compliant, BPA-free Materials: Nalgene bottles are molded from 100% virgin resin with nothing but FDA compliant colors added. Finished products are tested according to the requirements of the USFDA for food and beverage contact. Heavy-duty Walls: Uniformly durable walls are thicker and more resistant to failure than many similar looking, but lower quality bottles. Bottom: Inner corners of each bottle's bottom are curved for easy cleaning, and a plastic resin code is molded into the bottle for eventual recycling after years of sturdy service. Lifetime Warranty All Nalgene products include a limited lifetime manufacturer's warranty against defects in materials and workmanship. About Nalgene Nalgene is one of those brands many consider synonymous with its product category, much like Rollerblades or Q-Tips. The company creates ubiquitous BPA-free colored water bottles, geared toward providing a simple personal hydration solution that respects the environment. Nalgene offers a full product line of reusable containers of all kinds, made from a wide range of materials. Product Description Nalgene 48-Ounce Silo Tritan Wide Mouth Water Bottle (Blue)