Up front the same airline's pilots - as all other airlines' pilots - disdain cotton or wool, or long sleeves. Sad, and reprehensible.
Far too many years ago, one of my first flying instructors (CCF Flying Scholarship) told us off for wearing t-shirts to fly a Cessna 150. He undid his shirt cuffs and showed us the badly scarred tissue that extended from his wrists to nearly his elbows - he had been flying a Canberra with his flying suit sleeves rolled up above his flying gloves when the aircraft had suffered a flash fire. A very visible lesson was learned by us all.