Survivor Lightweight 14 lb Tyvek Open End 1.5" Expansion Mailers, 13 1/2, Square Flap, Redi-Strip Closure, 10 x 13, White, 25/Box

Superior protection for bulky items. Durable envelope resists punctures, tears and moisture. Expands on sides to fit binders, books, reports. Use instead of cartons or boxes. Lightweight envelope saves on postage. Clean, bright white color presents a professional image.