These A3 Envelopes are great for protecting. They are made from a rigid cardboard, these envelopes have pre-defined folding lines to allow the envelope to accommodate contents suitable. The envelopes are sealed using a peel and seal strip to ensure it remains sealed during transit. Use these envelopes frequently and reap their benefits. Very strong, durable, long lasting Khaki/brown A3 envelopes. Comes in a set of 50pcs.