Slimline Snow Wonder Card
This card, case'd from Ann Finney, has a WOW! to it, but is so quick and simple, you could make a lot in little time. The answer is the red foil paper (page 22 of the August - December Mini Catalog) and the red rhinestones help too.
On the video below, I will show you another card that has the WOW!, but is a standard
5 1/2" x 4 1/4" and won't require additional postage.

If you are asking what's the measurements for a Slimline card, I don't have an answer for you. I have talked with several demonstrators and I always get a different answer as to the measurements. So I think it depends on what envelope you have. I have #9 envelopes, so my card measures 8 1/2" x 3 31/2". But I have seen Slimline cards in all different sizes.
Measurements:
Thick Whisper white 8 1/2" x 7" scored at 3 1/2" & 7 5/8" x 2 5/8"
Red Foil 7 3/4" x 2 3/4"
Supplies:
Thanks for visiting my blog.