#10 Open End Envelopes w/Peel & Press (4 1/8 x 9 1/2) - Seafoam Blue (50 Qty.) | Perfect for Small Business Use and Invitations #10 Open End Envelopes (4 1/8" x 9 1/2") Color: 80lb. Seafoam Blue - Despite its name, our LUX Seafoam is anything but washed out. This concentrated color is a light and airy, blue-ish green hue, great for unique mailings or projects. 50 envelopes per pack Featuring - Peel & Press Sealing Method and Laser & Inkjet compatible Perfect for sending important documents or flat items, as well as small items and parts.