Charles River 5800 W’s Pack N Go Poncho Built with the traveler in mind, our Pack-N-Go® Poncho packs down into its own pocket, making it a cinch to travel with. Rain on the horizon? Simply unpack and go. Made from 100% polyester with taped seams for weather protection. Features include two zippered side pockets to keep your personal items secure and a full-zip silhouette.