Size options: 4 sizes available (S 8L, M 15L, L 25L, XL 35L) with dimensions from 18 x 48 cm to 30 x 67 cm. This range accommodates various sleeping bag types and outdoor gear storage needs for camping, hiking, and travel adventures. Waterproof and durable construction: Made from tear resistant polyester fabric with a waterproof coating to protect sleeping bags and gear from moisture, rain, and outdoor elements. Built to withstand rugged camping conditions. Advanced compression technology: Features a drawstring closure with an airtight lid and four adjustable compression straps. Efficiently removes excess air to reduce sleeping bag volume by up to 50%, maximizing backpack space. Versatile storage solution: Designed to store sleeping bags, clothing, blankets, pillows, outdoor accessories, and camping essentials, helping keep gear organized and easily accessible during wilderness adventures and travel. Use scenarios Backpacking and camping trips: Choose the appropriate size for your sleeping bag and essentials, then compress to save space in your pack, keeping your load lighter and more manageable. Wet or variable weather camping: Rely on the waterproof coating to protect contents from moisture and rain, ensuring gear stays dry in unsettled conditions. Travel and home organization: Use in a car, closet, or hotel room to organize clothes, blankets, pillows, and accessories, making packing and unpacking faster and more efficient.