Bed bugs have small, flat, oval-shaped bodies. They do NOT have wings. Adults though have the vestiges of wings called wing pads, but they do not fully develop into functional wings. Newly hatched nymphs are approximately the size of the head of a pin and are white or tan until they feed. They often are described as being about the size and shape of an apple seed. Adults are brown, although their bodies redden after feeding. Full-grown bed bugs move relatively slowly and measure between 4 to 5 mm. Homeowners sometimes have the misconception that bed bugs are too small to see with the naked eye. Nymphs can be small and difficult to see, but the adults are definitely detectable with the naked eye. They can usually be found in cracks and crevices they use to hide in and around your mattress, bedframe, windowsills, and other various hiding spots.