Feature: 1.Improved Portability Feature: Featuring a hangable design and crafted from lightweight material, this water bottle cover ensures effortless carrying and saves valuable space during commutes. 2.Widely Used: Featuring ice pack compatibility, it ensures prolonged cooling or warmth retention, making it ideal for cold beverages or hot food while supporting diverse temperature needs. 3.Optimized Heat Retention: Combines aluminum foil layer with pearl cotton improvement, in a triple-layer structure, to maintain food freshness and reduce heat loss efficiently over time. 4.Generous Size: Fits various cup sizes for daily needs, ensuring your water bottle cover works seamlessly with large capacity and provides insulation and cooling advantages while staying adaptable to different preferences. 5.Effortless to Use: Designed with advanced temperature locking to preserve heat or cold longer, improved by a smooth metal zipper, and washable materials for performance. Designed to meet the needs of active individuals, this water bottle cover acts as an efficient insulator for beverage containers, whether used indoors in the kitchen or outdoors while hiking, biking, camping, or traveling. Functioning as a carrier, holder, sleeve, or pouch, it ensures convenience during beach visits, fitness classes, and sports events. With its focus on utility and flexibility, it seamlessly integrates into daily routines. Specification: Product size: about 8.5x8.5x25cm/3.35x3.35x9.84 inches, Weight: 40g, Material: Aluminum foil, PE, pearl cotton. List: 1 * water bottle cover. Note: Due to different lighting and screen settings, the item color may be slightly different from the picture. Due to different manual measurements, please allow a 1-2cm difference in size.