White short-sleeved cotton undershirt with a square neckline trimmed in blue. The shirt is plain and unadorned, with no buttons or insignia, designed to be worn beneath the navy-blue jumper (2020.530.001) as part of the Royal Canadian Navy enlisted uniform.
The cut is typical of mid-20th century naval attire, providing comfort and ease of movement during service. Constructed from lightweight cotton fabric suitable for wear under wool outer garments.