These shirts were general issue from decades

To the side you'll find string side adjusters

it is in great shape and just needs buttons added

Quality Cotton Polyester Blend Material

there's some scuffs / cuts into the first layer of the waistband

British RAF Wool V Neck Pullover Jersey Jumper - Medium 94cm Pouch These shirts were general issueAt a glance 80% Wool & 20% Nylon Body Reinforced Elbows & Shoulder Patches 1 Shoulder Pocket Ribbed Wool Body Snug Fit but Stretchy V Neck Design Heavy Duty & Hard Wearing Iconic Woolly Pully Style Classic British RAF Slate Grey Blue Colour Pit to Pit: 21" Suggested Size: Medium Regular Label states 94cm but looks a touch larger Sleeve Length: 27" Regular Collar to Hem: 24" Modern Militaria Issued 2010's Genuine British Army RAF Surplus Grades Grade 1