But nowadays they are launched every summer, with some clubs releasing a third kit – even though they rarely get worn throughout the season.
Despite this, and whatever the costs, some fans will always rush out to buy a new shirt – whether it’s good, bad or downright ugly.
Here's a trip down memory lane to look back at 11 iconic Sheffield United home kits . . .
1. Admiral, 1975-1979
They may have been dark days on the pitch as United slipped from the top flight to the third tier of English football during this period, but at least they looked good with Admiral - who at the time were kit manufacturers for the England national team - producing some traditional red and white striped beauties. Photo: JPI Media
2. Hobott, 1979 to 1983
After Admiral came Sheffield-based Hobott, which was responsible for the club's first real departure from red and white stripes since they were introduced in 1891. Hobott produced this strip - which featured a central red panel with white either side - for two seasons between 1979 and 1981. Unfortunately, the radical change coincided with the club dropping into the old Division Four in 1981. Photo: Chris Lawton
3. Umbro 1983-1995
Umbro announced their arrival in style with this classic, which United sported from 1984 to 1987. During this time, the shirt carried the names of Simonds and Arnold Laver as sponsors and it's fair to say hotshot striker Keith Edwards certainly looked good in this iconic kit. Well, we think so anyway! Photo: JPI Media
4. Umbro 1987 to 1990
Unsurprisingly, this kit will bring back some special memories for Blades fans. Introduced in 1987, United played in black socks for the first time since 1960 but also donned a heavily dominated red top with thinner white pinstripes. On the pitch, the club went from strength to strength, gaining promotion from Division Three to the top flight in successive seasons under David Bassett. Photo: Peter Tuffrey