500PCS #10 Envelopes Letter Size Self Seal Business Envelopes No Window Security Mailing Envelopes Size 4-1/8 x 9-1/2 Inch - White 24LB Paper

Security Tint Pattern Design: The #10 business envelopes feature an interior blue security tint that safeguards sensitive information and a strong self-adhesive strip to keep the contents from spilling out.
Self Seal Envelopes: These envelopes include adhesive strips to satisfy office and everyday needs. Simply peel off the protective strip, stick and press to close, and the envelopes can securely hold letters, invoices, checks, or documents inside.
Windowless Design: Crafted with a windowless blank design, these envelopes are a fitting option for standard business and legal documents as well as confidential letters.
24LB Premium White Paper: Made of high-quality 24LB white woven paper, the envelopes offer a smooth writing surface. Meet Office and
Daily Use: Each set contains 500 pieces, providing an ample supply for your business. The #10 envelope measures 4-1/8 x 9-1/2 inches