Thick, nice quality. The armlength a bit too short for size XL though.
Ponten
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SE
UK RAF Submarine sweater
(4/28/2015)
A perfect all-wool sweater: durable and comfortable. Of a medium height and build, I found the sweater to be a grand fit. A little roll-up of the sleeves for usual wear, unrolled for warmer coverage, it is just the thing for long stays out-of-doors in dodgy weather. The neck is not choking and, of course, can be unrolled to protect much of the head.
The RAF/RN Sweater is highly recommended for comfortable undress wear in cold climes.
Deziel - CA