DESIGNED FOR MTB and BMX bicycles. PAD with EXTENSION provides a great solution for those looking for a landing in a flat area, allowing you to have smooth and safe landings even after high jumps. It allows the practice of big jumps with ramps such as AIR SPECIFICATIONS PAD with EXTENSION is a large enough landing (4m / approximately 13.12 feet). Despite that PAD (3 briefcase) with EXTENSION (1 briefcase) is extremely portable, which allows it to fit perfectly into an average-sized SUV leaving enough space for a ramp and a bike. The built-in shock absorbers allow a smooth and safe landing even when using a completely rigid bike (such as a BMX). Folded size: 1 briefcase of 1200 x 520 x 140 mm (47.2 x 20.5 x 5.5 in). COMPATIBILITY PAD with EXTENSION works perfectly with AIR, AREA 51.