Paper envelopes are an economical way to organize small projects. Elastic-cord closure keeps the protective flap securely closed. This durable flap and elastic-cord closure keep documents safe and secure. 2" expansion holds up to 500 sheets of letter-size paper. Colored expanding wallets are made of heavy-duty, 11 point colored stock. Assorted colors include 16 each of blue and green and 14 each of red and yellow.