Featuring a 25mm expanding gusset, these Q-Connect C5 envelopes are suitable for mailing bulky items, such as catalogues, reports, mailers and more. Made from durable, bright white 120gsm paper, the envelopes feature a convenient peel and seal closure for security in transit. These C5 envelopes are suitable for unfolded A5 sheets, or A4 sheets folded once. This pack contains 125 white gusset envelopes.