The last piece of kit you will need is a good harness. AKS recommend never buying a 2nd hand harness. Go into a good store that sells kiteboarding harnesses (not windsurfing harnesses) and try on as many as you can. Hang from a rope to test for comfort and try and simulate the load being directly above you to see if the harness will ride up over your ribs.

Do not skimp on the harness, it can be the difference between loving the sport and hating it through the pain it can cause. There are two types, Waist and Seat. Try on both. Waist are most common in the sport as the seat can become uncomfortable with the upward pull on the leg loops cutting into your groin area. Girls, do not buy a guys harness unless it truly is comfy for you. Ideally find a ladies harness as it will make a huge difference to your enjoyment of the sport.

There are two more options: You can also purchase a 2 in 1 waist harness with built in integral impact vest.  These can be good if you are keen on purchasing an impact vest as well as your harness.  You can also look at the "Nitro" boardshorts with built in harness.  These are a harness disguised as a normal long pair of board shorts.  As with the waist and seat harness, select by comfort, not price or aesthetic value.

A waist harness is generally more flexible in regard to it's ability to rotate a little and slide the harness hook to best suit the angle to the kite.  This allows better body positioning when riding "switch" or "blind" and wave riding.