Concave football boot
 The Concave football boot is a special boot designed to increase the 'sweet spot' (the area of the boot that makes contact with the ball) by approximately four times. It has evolved the games of Australian Football League Soccer and Rugby League. Independent testing at Deakin University has shown the boot increases power by between 8-15% and provides increased accuracy with a smaller margin of error. Concave also designed this new boot to protect the metatarsal bones.