General description Ideal for everyday use, these environmentally friendly Q-Connect pocket envelopes are made from 85% recycled 115gsm paper. The envelopes feature an easy to use, secure peel and seal closure, and a convenient address window measuring 90 x 45mm. The C5 envelopes are suitable for an A4 sheet folded once or an unfolded A5 sheet. This bulk pack contains 500 manilla envelopes.