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.
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