Here we have the current issue moisture wicking Coolmax T-shirt in BLACK, as issued to the Royal Navy, MoD Police and other military units in the UK.
Extremely lightweight, and made from moisture-wicking 'coolmax' material.
Anti static properties for increased comfort.

Size range available;

SMALL - label size 160/80 and measure approx 84cm chest.
MEDIUM - label size 170/90 and measure approx 96cm chest. 
LARGE - label size 180/100 and measure approx 108cm chest.
XLARGE - label size 190/110 and measure approx 112 cm chest.
XX LARGE - label size 200/120 and measures approx 120 cm chest.

New unissued condition, sourced direct from the MoD's sole clothing manufacturer.