The Wausau Royal Linen Envelopes are premium #10 envelopes designed for use with inkjet and/or laser printers. This pack includes 2 packages of 50 envelopes each, plus about 45 or more in the third pack with a total of 140+ envelopes The envelopes are 24lb white and are part of the Professional Series by Wausau. Perfect for business and industrial use, these envelopes offer a professional and polished look for your correspondence and packaging needs.