This white mug is heat activated. When hot liquid is added a heart appears on the side of the mug. Use the special marker that is included to write your own message, and it will appear when you shine the light from the pink keychain, also included. Comes with a second keychain that is heart shaped and has "Love you" in white lettering. Dishwasher safe, not microwave safe. The mug is just under 4 inches tall with a diameter slightly over 3 inches. We no longer have a storefront so are unable to offer automatic discounts on different listings purchased for combined shipping, but if you message us with a brief description for items of interest, we would be glad to give you a quote for a discounted price. If payment will be delayed for any reason please send a message to let us know. We're willing to work with you if you are willing to communicate with us =) We have discontinued accepting returns due to the significant increases in shipping and packaging costs as well as policy enforcement failures so all sales are final. If applicable all reasonable best offers will be considered--please keep in mind that we have to pay shipping cost in addition to listing payment processing fees. Requests for a discount on multiple item orders are welcome dependent on the weight and size of the package when possible. Requests for discounts on multiple item orders will be considered PRIOR to buying it now or committing to buy. We ship with USPS, FedEx, and UPS depending on package weight and destination. If you need a more specific delivery timeframe feel free to ask.