Easy Working,Just press pump head Economical-No battery,No motor Fits most standard water bottle 1.Item:WP04GL2.Easy Working-Just need to press the pump head3.Economical- no battery costs, no motor 4.Fits most standard water bottle sizes 5.Uses available:Home,Office,School,Factory,Hospital6.Color:Bule/white 7.Material:PP(environment-friendly)