15 durable 6 x 9 inch envelopes made of 28 lb kraft paper with gum seals. - Brand: Dewuoyeu - Size: 6 x 9 inches - Material: 28 lb Kraft Paper - Features: Durable and easy to use - Design: Gum seal Thank you for looking. I'm selling these because I have too many and can't use them all. Please understand that these are imported products, and there may be some stains on the hardware or wrinkles on the envelopes. Please consider this before purchasing. Thank you.