The term describes loose skin and fat accumulation on the upper arms, often resulting from weight fluctuations, aging, or genetics. This condition can cause self-consciousness and limit clothing choices. Its appearance resembles the wing of a bat, hence the descriptor.
Addressing this concern offers improved arm tone and a more streamlined silhouette. Historically, individuals sought solutions through targeted exercises, but often found limited success with exercise alone. Modern approaches incorporate a combination of strategies for optimal results.