It is a cylinder of knitted wool, similar to a short scarf, that can be fitted over the head and fashioned into a hat. The cap comforter has no insignia, and can be easily stowed without being creased.
Cap comforters were introduced in the 19th century as informal working headdress for British soldiers performing manual labour at camp, and as a comfortable undress cap on active service.
First World War
Cap comforters were worn during the First World War as a warm alternative to the service dress cap, as the fabric could be pulled low over the ears in the cold winter trenches. Their casual and non-rigid appearance made them an ideal item for night time trench raids.
Second World War
In the Second World War, soldiers from many British Army regiments wore cap comforters, particularly during training or when engaged in manual tasks. They later became synonymous with the apparel of the British commandos.
Cap comforters are still issued to Royal Marines.