Natural Habitat - Napkins Harbor Boat Blue, S/6 Natural Habitat Sale! from 6000 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Handblock printed Napkins. Block napkin. Size: 20x20. Material/fabric content: 100% cotton. Care instructions: Machine wash cold. Gentle cycle. Do not bleach. Air dry.