I've been using these for my morning lattes and the 16.4 ounce size is perfect for a double shot with plenty of steamed milk. There's even room left for whipped cream without it spilling over the rim.
Elizabeth W.★★★★★
The glass feels thicker than my old mugs and the wide base hasn't tipped once, even with a heavy pour. I've been layering espresso and frothed milk in these and there's plenty of headroom for whipped cream without it spilling over the rim.
Joshua★★★★☆
The 16.4 oz size is perfect for my layered lattes with plenty of room for foam on top. Only gripe is they're a bit top-heavy when full, so I hold them with two hands. Solid mugs otherwise.