Ideal for mailing bulky items such as catalogues, reports, brochures and more, these Plus Fabric envelopes feature an expanding 25mm gusset and durable, heavyweight 120gsm bright white paper. The envelopes also feature a simple peel and seal closure with Power-Tac adhesion for a quick, strong seal. This pack contains 100 envelopes measuring 381 x 254 x 25mm.