Ideal for outdoor activities gym sessions work commutes and travel it fits standard water bottles up to 40oz.Of course, it can also be customized with different capacities.This Water Bottle Carrier Bag and Bottle Pouch Holder is crafted from premium durable nylon fabric with reinforced stitching for long-lasting use. The lightweight yet sturdy design features an adjustable shoulder strap for comfortable carrying and a secure zippered closure to keep bottles in place. The water-resistant interior lining prevents condensation and the exterior mesh pocket provides extra storage for keys or small essentials. Its versatile functionality makes it perfect for hikers cyclists students and professionals alike.