5x7 Blank Cards with Envelopes: Includes 100 sheets flat 5 x 7 cardstocks (not fold-over) and 100 sheets 5.25 x 7.25 inches envelopes; Made from heavy-weight 250 GSM (90 lb) cardstock and 120 GSM envelopes, perfect for printing, invitations, and DIY projects Blank Note Cards and Envelopes: These thick 5x7 blank greeting cards and envelopes keep your cardstock secure, with no visibility through the paper; Each envelope features a pull-strip adhesive seal, making it easy to close without the need for a glue stick High-quality paper: These 5 x 7 envelopes for invitations are thick enough to beautifully absorb pens, ink, colored pencils, and watercolors, with no bleeding through to the other side of the card. Printer Applicable: Perfect for computerized artwork, these thank you cards with envelopes are compatible with LASER, INKJET, and COPIER printers, and won t rip or tear during printing; The 5x7 cardstock with envelopes also work beautifully with both electric and manual cutting machines Unleash creativity: Use our blank white cards and envelopes to express your thoughts with personality; Perfect for all occasions, including Mother's Day, bridal showers, weddings, birthdays, Christmas cards, "open when" letters, and "thinking of you" cards.