Sunlight Supply Ideal-Air Silver Flex Ducting — 4in. Dia. x 25ft.L

thin wrap and thin wire.....but it does exactly what its suppose to do...guide the air flow. I am using it on my bathroom exhaust fan with a "Y" connection http://www.amazon.com/gp/product/B0000223YC/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1 for 2 bathrooms and a soft outlet in the attic with a http://www.amazon.com/gp/product/B0019XXOMI/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1

Great product... Great Price

Got it quickly, Exactly what it said it was gonna be. In good condition. However they marked Books on the shipping label when this was the only thing in it and the Postal service was forced to open it and inspect it cause it was clearly not books and got me charged an extra 4 dollars. Thats why they wont get a 5 star rating out of me

Great product, exactly as described.