this isn't a hole but will need sewing

5" | Suggested Size: Small Regular - Label suggests a chest around 35 - 36" / SIZE 7

but these old Swiss trousers seemed a bit more trendy than most gear issued around the time

2 Slit Pockets & 1 Button Rear Pocket

British Royal Marines Lovat No. 1B / 1C Dress Jacket - Medium 170/100 Yugoslavian this isn't a hole butAt a glance 100% Wool Material 4 Front Button Pockets & Internal Slit Pouch Button Closure Engraved Royal Marines Buttons Bullion Thread Parachutist's Qualification Patch Gilt Thread Corporal Rank Patch Belt Loops Shoulder Epaulettes Like Army No. 2 Dress Jackets Quality Construction Unique "Lovat's Green" Colour Pit to Pit: 20" 51cm Suggested Size: Medium Slim Label states a chest around 100cm 39" but looks to be a bit smaller Sleeve Length: 25. 5"