1. Stable water bottle holder: Two adjustable water bottle holders (water bottles not included), which can be expanded to accommodate 35 oz/1000 ml water bottles respectively, and the hiking water bottle holder is equipped with an elastic rope, which can effectively keep the water bottle stable and safe when running, walking, hiking or jogging. 2. Rainproof material: The waist bag for men and women is made of thick, durable, and waterproof nylon. So you never have to worry about your belongings getting wet or damp in rainy days, it has a thick but breathable pad on the back, which can bring you great softness and keep your waist dry and fresh during exercise. 3. Well-organized and plenty of space: Keep all your necessities neatly and safely in 2 separate SBS zipper pockets or 2 built-in isolation pockets, such as credit cards, money, mobile phones, keys and other personal items. The travel waist bag can also hold items for hiking, running, walking, etc., such as energy bars, small cameras, snacks, headphones, sunglasses, off-road first aid kits, mobile phones, etc. 4. Adjustable waist belt: The hiking waist bag with water bottle is equipped with an adjustable waist belt, which can be adjusted to a comfortable and suitable size according to your waist circumference, allowing you to reduce weight and discomfort, and the sturdy buckle is convenient for wearing and taking off.