Size of Compression Stuff SackS(11L): 48cm x 18cm; M(18L): 53cm x 22cm; L(30L): 63cm x 26cm; XL(45L): 67cm x 30cm. You can choose the size according to the amount of luggage you put inside,which is perfect for compressing a large sleeping bag, laundry, clothing, bedding or other sundries in outdoor activities. Durable and Water-ResistantThe compression sack is made of premium 210D nylon, which makes it more breathable durable,strong.It has strong wear and tear resistance and is also portable and water-resistant, ensuring your belongings stay dry even in wet conditions. Personalized adaptationThe adjustable buckle can be adjusted smoothly without jamming according to the user's needs and preferences, allowing users to have a more personalized user experience. The interior space of the sleeping bag can be freely stretched and adjusted according to personal needs., Compression Stuff Sack is featuring easy shrink closure and elasticated closure, allowing you to easily adjust the length. Lightweight and convenientOur sleeping bag compression sacks are small size, easy to carry, will not increase the burden of camping, travelling, hiking and other outdoor sports! Versatile UseCompact Nylon Stuff Sack Storage bag is ideal for use as ultralight stuff sacks for camping, backpacking, backcountry treks, motor homes, cabins, and more,or The stuff sack can store sleeping bag, clothing, duvets, bedding, blanket, pillows, curtains, shoes, and any other you need.