The jacket can be buttoned or zipped shut and if it's a particularly windy day the cuffs can be fastened tighter and collar overturned to provide better insulation

This particular jacket comes from 1990

Jackets like this one were used for ceremonial and general duties around barracks and the likes

For practical features

British Army Olive OG Utility Jersey Pullover Jumper w/ Lance Corporal Patch - Large 106cm British The jacket can be buttonedAt a glance 100% Wool Body Material Reinforced Elbows & Shoulder Patches Choice of Neck Drawstrings Ribbed Wool Body Snug Fit but Stretchy Crewneck Design Length Designed to Fit All Sizes Heavy Duty & Hard Wearing Iconic Woolly Pully Style Lance Corporal Rank Patch Classic British Army Olive Green Colour Chest Size: 38" Suggested Size: Large Slim Label states 106cm Sleeve Length: 25" Regular Collar to Hem: 29 Modern Militaria Mid 2000's Onwards