The Royal Navy’s foul weather jackets are excellent at keeping rain and wind out, but are not particularly warm, being just a single layer of Gore-Tex. There were two designs of jacket, one with reflective patches on the sleeves and one without. The plain jacket included a quilted liner that could be worn with the jacket to help keep the wearer warm in colder conditions:The design of this jacket liner is very reminiscent of the 1970s and 1980s British Army quilted smock liners, but in dark blue rather than olive green. The liner is a sleeveless design:The quilting is in a diamond pattern, with a cotton tape edging around all the seams:The liner has a zip up the front:This allows the liner to be zipped into the wet weather jacket to hold it secure:And a label is sewn into the rear with sizing, NSN number and care instructions:The jackets these liners were worn now seem to have been dropped by the Navy in favour of one universal pattern with the reflective patches and a hood. The new jackets do not seem to have the facility to add a quilted liner and these now seem to be obsolete.