Chapin 61900 4-Gallon Tree and Turf Pro Commercial Backpack Sprayer with Stainless Steel Wand 4-Gallon translucent tank with 4-inch mouth opening for easy filling and cleaning Compatible with common fertilizers, weed killers and pesticides 3-Stage Filtration system with in-tank removable/cleanable filter Cushion grip shut-off with three nozzles for a variety of applications Padded shoulder straps to accommodate a full backpack for hours