No-moisture-required Grip-Seal(R) flap secures contents inside Simply peel off release strip and press down for a quick, secure seal. Made of crisp 24-lb white wove for a substantial feel. Privacy tint for confidentiality. Columbian(R) Grip-Seal(R) Business Envelopes, #10, 4 1/8in. x 9 1/2in., White, Box Of 250 is one of many Business Envelopes available through Office Depot. Made by Columbian.