Allbirds Mens Cruiser, size 10, Warm Slipper, Merino Wool. A modern update to the classic slip-on features a blend of Merino wool and recycled nylon upper. It’s easy style and all-day wearability make this your go-to choice. Easy care: machine washable after removing the insole (wash those by hand please), then let the slipper air dry. This is a great choice when traveling in Europe to add style rather than wearing running shoes!. Good condition.