The Boutique Vellum line is a house sheet of Announcement Converters. It yields unparalleled embossing and foil-stamping results and has been a hallmark of our social and wedding lines for years. The 7 1/4" Square 70# Text Boutique Vellum Super White envelopes can be used in a multitude of applications. Boutique Vellum is manufactured in the USA. Boutique Vellum Super White is also Acid Free, Lignin Free, PH Neutral, ECF/PCF, Archival Properties. Boutique Vellum Super White 7 1/4" Square 70# Text Envelopes