Pair a wing with a harness and backplate and you are ready to go diving. Make sure you get the proper lift for the diving you intend on doing. In general 25Lb wings are great for single tank diving with aluminum tanks. You may want to look at a 35Lb wing if you are diving larger or heavier steel single tanks or carrying a pony bottle. The 45LB wings are great for double AL80s and the 60LB wings for steel doubles and multiple stages. Don't hesitate to ask about what wing is best for your diving.