You are browsing zazzle's Rainbow Equal Sign coffee mug section where you can find many styles, sizes, and colors of Rainbow Equal Sign mugs available for customization or ready to buy as is. Most mug orders ship in 24 hours. Some of the more popular styles that zazzle offers are the standard 11 ounce white coffee mug, travel mugs, the morphing mug, and steins. There is no minimum order size and most mugs can be customized with your pictures and text. To see some of the other products available on zazzle.com, check out our main rainbow equal sign page.