1. M : 359X95X18MM ; L : 446X95X18MM 2. PERFECT FIT Fantech PILO built to fitperfectly with TKL and full size Gaming keyboard 3.ANTI-SLIP BASE Fantech PILO use anti-slip rubber base it provide anti-slip protection during your gaming hour 4.EXTREME COMFORT Fantech PILO is the perfect gaming companion providing comfort and support through regular and marathon play with soft foam cushion