These Strathmore Watercolor Cards are made specially to hold up to any wet media including watercolor, acrylic or gouache. These high quality cards are made from 140 lb. cold press watercolor paper. Don't waste time scouring the store racks for something that expresses how you feel. Make your own memorable greetings for any occassion.These acid-free, neutral pH cards are a perfect showcase for your personal greeting. Strathmore cards are lightly textured and suitable for most media. 5 in x 6-7/8 in. No deckle.