Description: QUALITY MATERIAL: The water bottle sleeve's outer layer is waterproof oxford cloth, the middle layer is warm pearl cotton, and the inner layer is high quality aluminum film. dustproof, lightweight, washable, reusable, durable. LONG THERMAL INSULATION: This water bottle carrier with dual use as hot and cold; Super wear resistant, non shrinking, Insulating warmer and colder, and long time thermal insulation for 2-6 hours, reusable. EASY TO USE: Great for water bottles, and longneck bottles, prevents hand burns or dropping and keeps bottles warm longer, plus reinforced stitching at all the seams, this water bottle holder is sturdy for lasting a long time. PROPER SIZE: 10cmx30cm/3.94inchx11.81inch, large capacity universal bottle holder. This bottle holder is easy to carry with adjustable straps, being suitable for all sorts of outfits and body types. WIDE APPLICATION: The bottle holder bag is very suitable for outdoor activities, such as walking, cycling, hiking, picnics, camping, boating, and so on. Whether for school, office, commute, sports, travel, or outdoor adventures, this Cover is definitely a must Size Chart: 10cmx30cm/3.94inchx11.81inch Package Includes: 1 Water Bottle Carrier Note: Please allow slightly difference due to l measurement. Color may be slightly different since different monitor. Thanks!