Dunnage for filling a void space in a container. An inflatable dunnage bag has an inflation valve for inflating the bag with a gas. The inflation valve is a solid member having an elevated portion. An outer surface of the bag is tightly fixed to the solid member along a circumferential sealing area distant from the top of the elevated portion. The top of the elevated portion is a circumferential sealing rim tightly contactable by the outer surface of the bag. The solid member has an inflation opening between the sealing area and the sealing rim. The bag has an inflation opening radially inward of the sealing rim.