Printer Compatible: Ideal for your computerized artwork with LASER, INKJET & COPIER and these card stock paper wont rip or tear when going through the printer; it also works beautifully with cutting machines either electric or manual Free Creation: A strong, creative way to say thank you or express your thoughts with personality; terrific for all occations such as Mother's day, bridal showers, wedding invitations, birthday, Christmas cards, open when letters or thinking of you cards Blank 5x7 Cardstock with Envelopes: It consists of 100 5 x 7 flat cardstocks (not fold over) and 100 envelopes 5.25 x 7.25 inches; each printer paper is made of heavy weight 250 GSM cardstock (about 90 lb) while the blank envelopes are 120 GSM weight Blank Flat Cards and Envelopes: The 5 x 7 envelopes for invitations are thick and you cannot see the blank card stock through them in order to protect your information; each has a pull strip adhesive seal which works nicely, and does not require a glue stick Impressive Quality: The thank you cards with envelopes are white, thick enough to absorb pens, inks, colored pencils and watercolor paints beautifully without any paint soaking through to the other side of the blank greeting cards