Space Bag Large Dual Use Vac or Roll * Triple your storage space. * Space Bag is made with bi-axial layers of nylon and polyethylene * Protects contents from dirt, bugs, mildew and odors * The bags are air tight, water tight and reusable * Large Dual Use Bags can be vacuumed sealed or the air can be rolled out * Large Dual Use Bags measure 21.5" X 33.5" * Large Bags hold up to 10 sweaters.