This Pearlescent 90gsm Gummed Diamond Flap Invitation Envelope available in either Oyster White and Champagne. These C7 oyster white envelopes are a UK manufactured product, popular all year round with limitless uses. Ideal Tip :- A lotto ticket folded fits quite nicely inside this envelope, give one to each guest at a wedding and all have a chance of winning the lottery the evening of your wedding day !! Ideal Tip :- You can write upon these envelopes with a normal ball point pen, but for best results we recommend you use a Compact Disc Pen which writes up CD's and is available from most good stationers. Manufacturing tolerances are given as +/- 2mm in any direction. The speed at which envelope manufacturing machines work together with the vagaries of the raw paper itself can lead to inconsistencies.