Demi Vertical wires from Porcelynne:
You are not able do coordinate the wires size according to the colour on the tip in the front as they change from time to time.
This is a heavy gauge 1/8 inch wide by 1/16 inch thick. Demi vertical wires are straight up on the ends. Regular wires have a 1/2 inch spread at the top.
The Vertical Underwire is generally used on larger cup sizes for an omega shaped bust. The wires are narrower than the regular underwire, but longer.
Wire Sizes Approximate Wire Lengths Approximate Wire Widths
36 7 1/2"/190mm 5"
38 8 1/16"/205mm 5 1/4"
40 8 11/16"/220mm 5 1/2"
42 9 1/4"/235mm 5 3/4"
44 9 15/16"/250mm 6 1/4"
46 10 7/16"/265mm 6 1/2"
48 11 1/32"/280mm 6 3/4"
50 11 5/8"/295mm 7"
52 12 3/16"/310mm 7 1/4"
54 12 13/16"/325mm 7 3/4"
56 13 3/8"/340mm 8"
58 13 31/32"/355mm 8 1/2"
60 14 9/16"/370mm 8 3/4"