The adhesive is strong that holds the envelopes closed. Material: 120 GSM - 32lb BOND/80lb TEXT paper, thick enough that the card doesn’t show through the envelope. 100Pcs Eco-friendly White A2 Envelopes: The envelope size is 4.375"H x 5.75"L, nice for A2 4x5 cards, photos,invitations,letters.
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