Material and construction - Made from 420D Oxford cloth with a silver-plated outside. The cover is waterproof and tear resistant for reliable protection. All weather protection - Provides full protection for your telescope in any weather. It can be stored safely in an underground garage or in a courtyard. It shields against sunlight, rain, ultraviolet rays, snow, dust, and moisture to help extend the telescope’s service life. Windproof design - An adjustable drawstring at the bottom allows you to set the most suitable tightness for the size of your telescope. The cover stays securely in place even in windy conditions. Intimate design - Front and back feature a double zipper design, enabling half-open or full-open use for convenient access and enhanced protection. Use scenarios - All-weather storage: Keep a telescope protected in a garage or courtyard during rain, sun, and dust days. - Outdoor field use: Shield the telescope during field observations or travel, while allowing easy access when needed. - Seasonal protection: Use between observing sessions to guard against moisture and UV exposure, helping to prolong telescope life.