Good Materials and Insulated -- The inside of our water bottle holder is made of aluminium film to keep your water warm or cold.The middle and outside of the water bottle carrier bag are made of pearl cotton and oxford fabric respectively. Applicable Water Bottles -- Our water bottle bag size is 3.94" x 5" x 11.81" and fits water bottles up to 40 ounces.The shoulder strap can be adjusted to the minimum length of 27.6" and the maximum length of 53.2" Multiple Utility Pockets -- The main pocket of our water bottle holder with strap is a convenient drawstring closure that makes it easy to put in and take out your bottle.This water bottle carrier with strap has 2 zippered pockets on the front, the smaller zippered pocket for cash and cards, and the larger zippered pocket for your smartphone, keys, and other stuff.In addition, it has two side slip-in pockets for small snacks. Wide Application -- Our water bottle sleeve is suitable for kids and adults, Which ideal for school, commute, jogging, hiking, cycling, walking shopping and travel, as well as camping, boating, fishing, beach trips and other outdoor activities. Good Materials -- Features an aluminum film interior for insulation, pearl cotton middle layer, and durable oxford fabric exterior. Fits Large Bottles -- Sized at 3.94" x 5" x 11.81", accommodating water bottles up to 40 ounces; adjustable shoulder strap from 27.6" to 53.2". Multiple Pockets -- Includes a drawstring main pocket, two front zippered pockets for essentials, and two side slip-in pockets for snacks. Versatile Use -- Perfect for school, commuting, jogging, hiking, and various outdoor activities like camping and fishing. Convenient Design -- Easy to carry and access, ideal for both kids and adults.