Features: 1.Quality PE material, free of BPA and phthalates, safe to use, unbreakable with great durability. Dual layer design, the air insulation layer can keep the water tempeature for over one hour. 2.Anti-leakage spout valve is convenient for drinking, rubber O ring ensres no leakage even during violent waggling like cycling. 3.Wide bottle opening is good for easy water injection and cleaning, you can also put ice bars in it. 4.Ergonomic design is comfortable for holding and also anti-slip for mounting on bike bottle holder. 5.670ml large capacity meets your water need for outdoor use. With a detachable should strap for easy carrying, suitable for various outdoor uses, cycling, hiking, camping, etc. Specification: Material: PE Color: Blue Grey Capacity: Approx. 670ml Weight: Approx. 137g Packing Included:1 x Water Bottle