This design is made to fit a 4x4 hoop. The finished item is around 3.5" to 3.75" tall with the snaps closed.
To add lettering to this design you will need embroidery software that will let you merge in your lettering in between the first and second steps. The rectangle measures 2" x 3.5" (including the satin stitch), so any design or letters that are smaller than that will fit in the space.
A PDF with instructions and photos is included in the download. To make these you will need the snaps, a tool to attach the snaps, and a standard sized key ring.
These are files for embroidery machines - NOT a finished item.
The following formats are included in the download: PES, DST, EXP, HUS, JEF, VP3, VIP, and XXX.