Ooooh--the SKIF patterns have arrived! They're a fun read, I won't spoil it everyone by posting too much information.
And what are those envelopes?
The Neptune pattern includes three industrial-style metal buttons, a tiny metal SKIF tag, and some stiff waxed cord for making the button closures. The pattern is started at the bottom front edge and worked to the bottom back (sleeves are worked separately).
The Zena pattern includes the SKIF tag and an industrial found object that you can flip over and attach to your finished sweater. Zena is worked similarly to Neptune, from the bottom front to the bottom of the back (although not continuously).
(Cross-posted at the SKIF KAL)