The The Collier 15-oz. Ceramic Travel Mug has double-wall construction, ceramic outer with stainless steel inner which provides a long lasting finish. The Collier 15-oz. Ceramic Travel Mug includes a one color imprint and setup and arrives with a push-on lid with slide-lock opening. The Bullet SM-6774 can hold up to 15 ounces of your favorite drink and has a large imprint area.