Strathmore-Cards & Envelopes: Watercolor Cold Press. This heavy weight paper has excellent surface strength and resists buckling. Create your own unique, hand decorated cards for special occasions or everyday use. Paint with watercolor, acrylic or gouache. This package contains ten 3-1/2x4-7/8 inch cold press cards and ten 3- 5/8x5-1/8 inch white envelopes. Acid free. Made in USA.