I haven't used it much because I haven't been caught in the rain. The dedicated storage bag is connected to the top of the main body with a string. 【Brand Reliability】 mont-bell is a brand known for its high-quality outdoor gear. This pack cover is made of reliable materials and is durable. 【Size Compatibility】 Designed to fit 25L to 30L backpacks, it is compatible with various backpacks. This protects your important belongings from rain and dirt. 【Lightweight and Easy to Carry】 Made of lightweight material, it is easy to carry. It can be stored compactly during outdoor activities and travel, making it very convenient. - Brand: mont-bell - Color: Blue - Size: 25-30L - Type: Pack Cover Thank you for viewing. Material: Water repellent