Custom I Solemnly Swear That I Am Up To No Good Harry Potter Funny Words Ceramic Magic Color Changing Morning Coffee Tea Drinking Mug -Heat Sensitive (11 oz) Please recognize our Brand CASECOCO Authorised Seller--Iconbox.In case you purchase the wrong mug from other sellers.If you can not find Iconbox in [ Add to Card ], please find us in [ Other Sellers on Amazon ]below. Iconbox used unique picture to make this mug,other sellers din't have it. When cold=Just plain black in color.When hot=Show the nice and funny image or words 100% Ceramic mug for For coffee,milk,tea and hot chocolate,Come in 11 Ounce with black handle Easy to clean,dishwasher safe,Size:3.74" tall by 3.23"diameter