Made similarly to the 10' Professional Flat Series however curved from top to bottom. Logic of this backboard is it simulates a tennis match while you still achieve practice, warm-up and workout. When you hit the ball up, it tends to come back down toward your feet. If you hit it down, it tends to return up, like an opponent should in a match. Sideways, you still must run for the ball, just like a match. On-going studies on Bakko's test court reveal this backboard is first choice by players and professionals (if price is not a major consideration). The bottom and top project monimally from fence 6" due to curve, not very obtrusive. Typically purchased by tennis camps, clubs and extreme tennis enthusiasts. The most popular size is 5 panels. Call for shipping quote. Several other sizes available.