Cooper XL7 Helmet - Steve’s career began at Cooper Canada, from 1980 to 1985. As Design Supervisor, he led a team of designers to create award-winning products for hockey, baseball, football, golf, lacrosse and other sports. During this time he developed the Cooper XL7. This was the first hockey helmet to be adjustable to fit many head sizes without using any tools. Introduced in 1984, the XL7 was the lightest helmet produced at the time.