Early Chicago Cubs Jerseys were made of heavy wool fabric and featured button-up fronts and long sleeves. 

The designs were simple, with team logos or lettering embroidered on the chest or sleeves. These classic designs are still popular today, particularly among fans of vintage and throwback jerseys.

In the mid-20th century, baseball jerseys began to evolve with the introduction of more modern fabrics and designs. 

Short sleeves and V-necklines became more common, and teams began to experiment with bold colours and patterns. 

The 1960s saw the emergence of colourful jerseys with contrasting piping, while the 1970s introduced pullover styles and unique logos.

In the 1990s and early 2000s, baseball jerseys became even more modern and daring. 

Teams began to experiment with alternate jerseys, featuring bold colours and designs that departed from traditional team colours. 

This trend has continued to the present day, with teams regularly debuting new alternate jerseys that push the boundaries of traditional baseball jersey design.

In addition to changes in design, advancements in technology have also had an impact on baseball jersey evolution. 

Moisture-wicking fabrics, cooling technologies, and strategic ventilation have all become standard features of modern baseball jerseys, enhancing players' comfort and performance on the field.