: Ceramic With Comfortable Frosted Feel, Is Very Durable And Sturdy EASY TO CLEAN: You Can Pop The Mug Into The Microwave To Heat Up A Drink And Put It In The Dishwasher For Easy Cleanup, Please Pull Out Metal Ring Before Microwaving Or Dishwashing COOL GIFT : What A Great Cool Gift For Your Friend In The Defence Force , Military, Veteran Or Your Boss With A Short Temper, Great Father's Day Gift Too For Your Dear Dad Novelty Idea This Dangerous Looking Army Grenade Mug Has A Lid To Help Keep Your Beverage Warm Or Can Hold Your Tea Bag After You Have Removed It. Cool Gift What A Great Cool Gift For Your Friend In The Defence Force , Military, veteran or Your Boss With A Short Temper, Great Father's Day gift too for your Dear dad The Grenade Coffee Mug Is Made Of Ceramic, Is Very Durable And Sturdy Easy To Clean You Can Pop The Mug Into The Microwave To Heat Up A Drink And Put It In The Dishwasher For Easy Cleanup, Please Pull Out Metal Ring Before Microwaving Or Dishwashing, Hand Wash Recommended For The Gold Color Grenade Mug