ORLA KIELY XL dust bag,I have bought several used bags and I like it to have an authentic dust bag with it. I have a significant knowledge on how to authenticate what's fake and real one. And common sense a luxury bag will not make poor quality, I have first-hand experience buying online and I am selling an authentic one.Unsure w/ material but some% of cotton,dimension 25"x26.75" and comes from a smoke-free and pet-free home. Buy it with confidence!