Like other pressurized sprayers, but mo’ bigger! Chose from 0.5, 1, 2, or 3 gallon sprayers based on your needs. Anything larger, you’ll want as a backpack with comfortable straps because it will be heavy to cary around. From the manufacturer:

All purpose sprayer ideal for herbicides, pesticides, liquid fertilizers and many home applications! Funnel top opening makes for easy filling. Trigger with a lock-on option can be engaged for a continuous spraying. Translucent polyethylene for durability and easy viewing of liquid levels. Carry with the grip handle or use the included shoulder strap. Includes a pressure relieve valve and a 3 foot hose.