Material:Outdoor wind measurement sock bag is made of waterproof polyester taffeta, thicken design is durable and resistant to long-term wind, rain and sun damage. Light weight helps maintain the shape of the windsock and achieve optimal wind direction. EASY TO USE:It is easy to install. You can take the portable windsock for camping or other outdoor activities. You will absolutely love this windsock for your flag pole. Night Safety Protection: Windsock with reflective belt can indicate the wind direction and intensity at night, which leads to a larger field of view and a safety warning. Applicable scope:Waterproof windsock is easy to install, can be widely used in in airports, industrial sites, meteorology, chemistry, environmental protection, agriculture and other industries. Specifications: Color: orange Material: Oxford cloth Size: 80 cm The diameter of the air inlet: 23 cm The diameter of the air outlet: 12 cm Quantity: 1 piece Weight: 100 grams Package Contents: 1 x Orange windsock