Quality Park 10 x 13 x 2 Expansion Envelopes with Self-Seal Closure

Expansion - 10" Width x 13" Length - 2" Gusset - 40 lb - Self-sealing - Kraft - Kraft - 25 / Pack. Strong material made from heavy-duty, 40 lb. brown Kraft stock to keep contents safe and secure. Gusseted sides that expand up to 2" to accommodate extra-thick mailings.