H&M Women's Brown Open Long Sleeve Knit Cardigan Pockets Ribbing Women's Size Medium

Measurements are approximate, flat-lay:

Top of Shoulder to bottom front hem:  30 inches.

Sleeve:  24.5 inches.

Armpit to Armpit:  16.5 inches.

Waist:  16 inches.

Mild pilling underneath armpits, see photos.