Chapin International 61500 ProSeries Backpack Sprayer, 4 gal, Translucent White 4-Gallon 4-inch wide mouth opening, translucent tank for easy filling and cleaning Compatible with common fertilizers, weed killers and pesticides 2-Stage filtration system, one filter at the top and another filter at shut-off Poly shut-off with 2 nozzles: adjustable poly cone and fan tip Padded shoulder straps to accommodate a full backpack for hours