You also have a buttonable rear vent

Genuine East German Prison Service "Strafvollzug" / National People's Army / NVA / Nationale Volksarmee Surplus

Detachable Synthetic Fur Collar

which is a British 38" chest in regular length

likely 39cm collar

British RAF PTI Vest - Medium 102cm Pullover You also have a buttonableAt a glance 100% Cotton Material PTI Patch Great Retro Style Vest Design White w Light Blue Edging Chest Size: 39" Estimated Size: Medium Regular Label reads 102cm Collar to Hem: 29" Modern Militaria Issued Mid 1990's Genuine British Army Surplus MOD Surplus Grades Grade 1 Great condition, some prior use but over all in great shape. Some ever so faint markings from prior use which won't notice if worn tucked in, but certainly ready for much more wear.