The presently disclosed subject matter relates to a flotation device suited to teach beginner swimming techniques or provide enjoyment in an aquatic environment while providing flotation to at least a portion of the swimmer's body. The flotation device for aiding a swimmer in a body of water may comprise a body formed from an extruded foam and comprising a top surface, a bottom surface, a first side rail, a second side rail, a leading lateral surface, and a trailing lateral surface, and wherein the extruded foam is a flexible cellular foam. The presently disclosed subject matter also relates to methods of making the flotation device.