Brand: Kensie Home.

Happy Camper 100% Melamine 8" Plate Set.

Camping Trailers Design with Flamingos, and pineapples. 

One plate has a number 1 underneath, 

Two plates have a number 2 underneath.

Three plates have a number 3 underneath.

Is 100% melamine safe?

What Is Melamine & Is It Safe? Using Melamine in Your Kitchen

While some reports question the safety of melamine dishes, the FDA's Safety and Risk Assessment of Melamine states that this type of plastic tableware is safe for use. 

As long as you don't heat your food to 160 degrees Fahrenheit or higher, the chemicals in melamine will not transfer into your meal.

Why can't you microwave melamine dishes?

Melamine dinnerware acts much the same when it's frequently microwaved or exposed to temps hotter than 160°F. 

The thirsty material will eventually brown, become brittle and break, chip, or crack long before its normal service life should be up.