The popular design manufactured in super-light stainless steel and titanium. Smooth rolled lip and sturdy handle for easy drinking. Titanium Sierra Cup - Weight: 1.52oz. Capacity: 11 fl.oz. Stainless Sierra Cup - Weight: 3.6oz. Capacity: 10 fl.oz. Stainless Sierra Mug - Weight: 3.76 oz. Capacity: 16 fl. Oz.