Power Balance Engineered by EcoVessel presents the classy, sleek, and thoughtfully designed, ASPEN TriMax Insulated Bottle offers a cool look with practical features you'll appreciate the more you use it. It will keep your drinks cold for up to 100 hours and hot for up to 20 hours. Its thermal properties can't be matched by any other bottle. It is made with internal threading so it opens and closes quickly and easily with just a one and a half twist. With the internal threading, the rim is smooth for comfortable drinking and easy cleaning. This versatile bottle is ideal for any drink, from cold water to hot coffee. Use it as a wine growler and keep your red, white or rose fresh for hours.