Cooperalls were designed by Brian Heaton, the senior designer for Cooper Canada from 1972 to 1975. Promoted as "a complete hockey uniform system" it consisted of an elasticated girdle extending from the middle of the rib cage to the top of the knees, worn beneath a tracksuit-style woven nylon outer shell covering waist to ankle. The girdle had pockets in to which lightweight, compression moulded foam pads were placed and the close fitting nature of the garment ensured that the pads always stayed in contact with the areas of the body they were designed to protect. This replaced the traditional combination of short hockey pants and socks, and Cooper claimed that when combined with their own brand of extra light shin guards, shoulder pads and gloves the system weighed 40% less than a conventional uniform. As well as being considerably lighter, the system offered players greater freedom of movement and improved hip, pelvis and thigh protection.
A short-legged outer shell, called the "Cooperall Coupé" (from the French past participle coupé, to cut) was also available for traditionalists. The long pant was first adopted by the Ontario Hockey League in the late 1970s and was tested in training camps by a number of National Hockey League teams, including the Winnipeg Jets and the Quebec Nordiques.
A similar style of girdle and long pant, called the "Propac", was manufactured by CCM. This design was worn by the Philadelphia Flyers in the 1981-82 NHL season, and both the Flyers and the Hartford Whalers in the 1982-83 NHL season.
The long pant design received considerable criticism and concern for player safety, as they provided less friction with the ice during a fall causing players to slide more violently into the boards. Some players said that the design was too warm, and a number of goalies complained that the puck was difficult to see against the long black pants worn by the Flyers players. The NHL subsequently passed a rule that teams had to wear short pants and home and away socks from the 1983-84 season onwards. However, they remained popular in amateur hockey and inline hockey throughout the 1980s and the girdle and short shell design is still available from some hockey manufacturers.
- "Goalie guru dead at 58". Windsor Star (Windsor). 11 September 2008. Retrieved 27 April 2014.
- Wilton, Dan (1999). "Hockey". The Students Commission. Retrieved 27 April 2014.
- McDougall, Gordon H. G.; Kotler, Philip (1983). Principles of Marketing. Prentice Hall. p. 296. ISBN 9780137093113.
- Fu, Freddie H.; Stone, David A. (1994). Sports Injuries. Lippincott Williams and Wilkins. p. 424. ISBN 9780683033885.
- Cooper 1987. Cooper Canada. 1987. p. 16. Cooper Canada product catalogue. Retrieved 27 April 2014.
- The History of Hockey Equipment. Reebok International. 2007. p. 8. Retrieved 27 April 2014.
- Diamond, Dan; Duplacey, James; Zweig, Eric (2001). Hockey Stories On and Off the Ice. Andrews McMeel. p. 213. ISBN 9780740719035.
- "Layin' on the Lumber - The CCM Hockey Stick". Vintage CCM. 2 October 2012. Retrieved 27 April 2014.
- Although generally referred to as "Cooperalls", photographs of the teams taken at the time show the CCM manufacturer's logo on the pant leg. The CCM logo is visible in this photo of Chris Kotsopoulos (Hartford Whalers) and this photo of Bill Barber (Philadelphia Flyers).
- Kurtenblog, Orland (28 June 2011). "Mark Howe Induction Reminds Us the Flyers Used to Wear Pants". The Province. Retrieved 31 March 2014.
- Codagnone, Brian. The Hartford Whalers. Charleston: Arcadia Publishing. p. 62. ISBN 9780738555010.
- "NHL Uniforms Old and New". Sports Illustrated. Retrieved 31 March 2014.
- "Uniform". The Blowhole. 1999. Retrieved 23 April 2014.
- Ferguson, Bill. "Stick Styles". Hockey Player. Retrieved 23 April 2014.
- Rosenhek, Eric (12 May 2009). "The Death of the Cooperall". The Good Point.