S

Went with the small because I wanted something that wouldn't take up half my bag, and it fits exactly like I hoped. Slides right into my jacket pocket without any bulk.

I've been carrying this in my tote for a couple weeks now and it tucks into even my smallest purse pocket without any bulk. The sizing is spot on for everyday use, exactly what I needed.

Wasn't sure the small was worth it until I actually wore it — the compact fit tucks under a jacket without any bunching, which I didn't expect. Honestly it's become my default pick over the bigger one I already had.