Premium Fabric The sleeping bag sheet is made of premium polyester. Unlike normal cotton fabric, the biggest advantage of polyester fiber is its good wrinkle resistance and good shape retention. This silky and soft fabric, comfortable and breathable, no shrinkage, no pilling, no fading, can be used all year round. Especially suitable for business travelers, outdoor adventurers, camping needs. Spacious ComfortableOne side of the sleeping bag has a snap opening for easy entry and exit. The bottom zipper can be unzipped, leaving enough space for tall people to stretch their legs. High quality stitching and durable zippers, no need to worry about snags or tears. Benefits from its good humanized design. Lightweight portabilityUnparalleled lightness and compactness to lighten the burden of your travel. It is easy to put it in a backpack or suitcase. Easy to carry, it is suitable for hotels, travel, hiking, camping, airplanes, trains and business trips. Easy to clean and maintain Machine washable and hand washable. Easy to wash and air dries quickly, much faster than cotton fabrics. So helps keep your down sleeping bag clean. Which can be added to your down sleeping bag in cold climates for 5-10F extra warmth. Can also be used on its own in hot climates, provides a clean and healthy place to sleep while traveling or in the hotel. Specification: Material: Premium Polyester Dimensions: 70.9 x 82.7 inch / 180 x 210 cm Package included: double sleeping bag, portable storage bag. Occasion of use: travel, camping, hiking, train, hotel, driving and any occasion you want to sleep.