What is "shrink-pack"

shrink-pack \shrink"-pack\, shrinkpack \shrink"pack\, n. same as shrink-wrap, n..

shrink-wrap \shrink"-wrap\, shrinkwrap \shrink"wrap\, n. a type of plastic film, usually transparent, that shrinks upon application of heat, and may be used to form a wrapping around objects that fits tightly and closely follows the contours of the wrapped object; -- also called shrink-pack, shrinkpack or shrink-wrapping.