The whole piece is designed to be wind resistant and the adjustable waist and cuffs will allow you to insulate yourself however you please

1/4 Length Zipper Funnel Collar

but the main thing to note is some wear on the collar and the additional windproofing hook & eye closure is missing in parts

Sleeve Length: 26" / Long - Label reads L

British Army Survival One Drysuit Immersion Suit - Medium Waterproof The whole piece is designedAt a glance Goretex Waterproof PTFE Membrane, 3 Layer Laminate Material Rubberised Cuffs & Collar 1 Shoulder Pocket & 4 Leg Pockets Zipper Closure Heavy Duty Reinforced Kneepads, Elbow Pads & Rear Built in Boots Orange & Black Colourway w Hi Vis Strips Pit to Pit: 22" Suggested Size: Medium Slim Label reads "M: R" Sleeve Length: 27" Long Inside Leg (Reaching to bottom of boots): 34" Total Length: 68" Modern Militaria Dated 2015 Genuine British Army