Boa Technology, the American company that markets the proprietary Boa closure system for shoes, has made several management changes. Ilya Minkin has become product manager, replacing Jimmy Capra who is now heading up the company's medical business unit. Chuck Mason, the new vice president of sales and marketing for the company, has boosted his department with the addition of a global category manager and two support specialists, and with the promotion of Garett Graubins, a former official of The North Face, to the position of Boa's marketing manager.