Grey Wicker Dog Basket by Kosmo | Jan 18, 2017 | Kosmo's News | Classic dog basket now in grey! We now stock our classic dog basket in grey rattan. It’s still as tough as ever, but simply with the grey finish which is the height of fashion! It’s also available with a fitted cushion filled with layers of thermal polyester fiber to give warmth, insulation & comfort. They are fully machine washable and will keep their shape after washing.