男款長袖棉羊毛運動襯衫（Houser）

The cotton-lambswool blend is genuinely warm without feeling bulky under a jacket, and it breathes well enough that I didn't overheat indoors. Sleeves are cut long enough for my arms, which is rare.

Wore this to a cool outdoor wedding and it kept me comfortable all evening without feeling bulky. The cotton-lambswool blend is warmer than I expected but still breathes, and the sleeves don't bunch up under a jacket.

The lambswool makes it noticeably warmer than a plain cotton shirt, which is nice for fall. Sizing runs a bit long in the sleeves for me, and it wrinkled more than I expected after one wash.