About Face Designs 186806 Bat Shit Crazy Mug Coffee, 13.5 oz, yellow The Hilarious Say What? Office Talk Mugs offer the perfect combination of workplace camaraderie and dry wit. 13.5oz Dishwasher & Microwave Safe FDA Approved and California Proposition 65 Certified Please Note: All returns are subject to a potential 20% restocking fee on a case by case basis.