The Ultimate Direction Fastpack 20 20L Hydration Backpack in M/L size is designed for hiking with a sleek black and blue color scheme. Made with durable nylon fabric and featuring a buckle closure, this hydration backpack has a capacity of 20 liters and comes with two pockets for convenient storage. The adjustable size and nylon handle/strap material make it comfortable to wear during outdoor activities, while the plastic frame adds stability. Easy to clean with a damp cloth, this backpack is suitable for both men and women and weighs 607 grams, making it a lightweight and practical choice for hiking adventures.