Indigo® C4 White Window Envelopes – Peel & Seal, 100gsm Premium Quality, 324x229mm A4 Size – Strong Eco-Friendly Mailing Envelopes for Home, Office & E-Commerce Postage – Pack of 250

• 📏 C4 Size (324 × 229 mm) – Fits A4 sheets perfectly without folding, ideal for letters, invoices, and documents.
• 💪 100gsm Heavyweight Paper – Provides a strong, premium-quality finish for professional mailing.
• 🪟 Address Window – Enables quick, accurate addressing for business correspondence.
• 🔒 Peel & Seal Closure – Quick and secure peel-and-press strip ensures reliable sealing every time.
• 🌱 Eco-Friendly Paper – Made from PEFC-certified, recyclable materials for sustainable mailing.

Send documents securely and professionally with Indigo C4 White Window Envelopes, designed for strength, protection, and presentation. Manufactured from premium 100gsm PEFC-certified paper, these envelopes offer superior rigidity and durability, keeping A4 sheets flat and crease-free. The Peel & Seal closure provides a clean, reliable seal without moisture, while the address window saves time and ensures tidy, professional addressing. Perfect for offices, schools, e-commerce sellers, and home users, Indigo envelopes combine environmental responsibility, professional appearance, and reliable everyday performance.