Selling a set. K-4639 Back K-4604 Shoulder/Elbow All KUSHITANI Air CE. Having a set gives you peace of mind. Perfect for KUSHITANI mesh jackets. The wind passes through, so it's cool. For safety. It would be perfect if there were chest pads, but Safe driving is the most important thing. However, it's like a radar detector; somehow, wearing body armor makes you drive more safely (lol). How about taking this opportunity?