Hot Chillys Base Layer top

Base layer Top Hot Chillys Brand Unsure of warmth factor but I bought these new several years ago and I remember they were very expensive so I’m guessing these will keep you pretty toasty. No tag. See pics for measurements based on the measurements below I’m guessing S or possibly XS Please research if unsure Sleeve 22 1/2” Back 22 1/2” Chest pit to pit 17 1/2” Excellent condition Non smoking home *snow board Snow ski Cold gear Spyder Nills The north face