The Grow1 4 Gallon Backpack Sprayer is made from the highest grade polyethylene plastic that resists corrosion from insecticides or herbicides. This light-weight Sprayer is ideal for spraying water, fertilizers, herbicides, pesticides, and more. It is worn conveniently on the operator’s back, like a backpack, for maximum portability and ease of use. Features: – 3 Interchangeable nozzles for different spray patterns – Heavy-duty 5ft hose – Convenient carrying strap – 29-59 PSI – Replacement parts included