Keep your business correspondence neat, secure, and professional with the Indigo® C4 White Peel & Seal Window Envelopes. Designed to hold A4 documents flat without folding, these premium-quality envelopes are ideal for invoices, contracts, letters, reports, and other important paperwork. The integrated address window eliminates the need for handwritten addresses or adhesive labels, saving valuable time while presenting a clean, professional appearance. Manufactured from durable 100gsm white paper, these envelopes provide excellent strength and opacity, while the reliable peel & seal closure offers quick, secure, tamper-resistant sealing. Supplied in convenient packs, they are perfect for offices, schools, businesses, and home users with regular mailing requirements.