Create your own postcard designs with ink, pencil, pastel, gel pen, and more! Set contains 25 acid-free archival-quality postcards. Sturdy 400 gsm card stock. Fine-tooth surface. No ink bleed for fine line control. Good for dry and wet media. For artists and crafters of all levels. Backs of cards have space for your personal messages and are lined for addressing. Postcards measure 6'' wide x 4'' high.