👉 Foaminess refers to a characteristic of certain materials, including plastics and rubber, that makes them appear soft or drier than their solid counterparts. This effect is often attributed to the presence of air bubbles in the material, which can cause it to appear softer and more flexible when compared to its solid counterpart. The term "foaminess" is often used interchangeably with "softness," but it is also sometimes associated with a similar concept called "density."