|In the first few series, Martin's nightwear consisted of sweat pants and t-shirts.|
In Series 5, when he began to share a home with Louisa, he started wearing light blue, 2-piece
formal pajama sets. There are two different styles - one with white piping that buttons up to the
collar, and the other with dark blue piping that has a slightly open collar. Both have rounded
collars and rounded lapels. It looks like there is one additional light blue pajama set that he
wears in S7E1 that doesn't appear to have any piping and has a pointed collar.