The famous, or infamous, British woolly pully was first developed during World War 2 and used by the SAS. After the War, the woolly pully was kept in service, soon being used by all troops. These are still being used to some extent today.
 
Made of rib knit wool, these are made to stretch while still holding their shape, giving you a warm, cozy feel when wearing. 
They feature reinforced elbows and shoulders, giving them more life. 
 
These have clearly been used, and most will have small holes (that can easily be fixed and do not affect the wear).
Nonetheless, these are iconic with the British Military and are great for hiking, camping, hunting, and any outdoor activities.