pack of assorted heat shrink neck wrap band for boston round type bottles and more bundle of 1250 (250 of each size) supplement and supply shrink band sample packs work perfectly if you are interested in purchasing shrink bands, but don't know exactly what size you need. each size in the sample pack contains ~15-20 shrink bands individually packaged and marked so you can determine which one works best for your application and then order the full quantities from our main listing.