Sit . Unfold . Sleep Shin Sano has a comfortable, thick futon mattress surrounded by a stylish slatted frame at the back. Pull the futon out flat and in a few seconds you have a lovely double bed for your guests with a headboard and two comfortable cushions to lean on. Shin Sano also works well as a sofa bed if you just want to relax at home. Please note that all our futon products are handmade, so there may be slight variations in dimensions and weight.