RAF Blue Roll Neck Jumper

 Royal Air Force roll neck sweater.

This sweater was originally issued to RAF Flight Crew to wear under their battle dress or Irvin flight jacket from 1944 onwards, it replaced the white version previously issued.

Also it's seen being worn by German U boat Crew and Royal Navy in WW2

Features: 

• Long roll neck top
• RAF pattern
• Navy blue colour
• 3 fold British wool
• Treated to prevent shrinkage
• Made to original 70 year old specification
• 100% wool
• Machine washable cool
• Made in UK

The sweaters seem to be generously sized so it might be worth ordering a smaller size for a closer fit