Advanced Performance Matrix (APM - Careful blending and placement of carbon fibre, Aramid and glass fibre - Creates a range of performance levels . Resulting output / feel performance levels in excess - Mid Bow 1 is an evenly balanced profile with a 25mm bow apex -Apex placed around the middle of the playing area .use able to all players - Shape is a great all-rounder - For a slightly more conventional playing style - Long lasting product - Made by using highest quality raw material - Durable - Easy to use .