It has been used three times. Definitely has spots that did not come off when wiped off. Still it is in great used condition. Timeless Swedish design. Classic backpack that everyone wants Hard-wearing Vinylon fabric Produced without PFC’s and made for a lifetime of use These backpacks were created back in 1978 to help prevent back problems among Swedish school. Children and quickly became a common site at preschools and nature schools throughout the country. Clean with a soft brush and lukewarm water. Purchase with confidence from a posh ambassador and posh sales person since 2016