Read the Accelerant jacket product story and insert the word 'perforation' in front of the word 'leather'. This is exactly how we came up with the idea for the Accelerant Perf jacket. You see, thousands of little holes are painstakingly stamped into the leather chassis by hand. This, while being an incredibly time consuming process, gives the Accelerant Perf jacket unbelievable ventilation - perfect for summer riding. Its as if a colony of thousands of little holes are working in unison to blow cooling air on your body. Quite remarkable when you think about it.