Blank Cards and Envelopes Bulk: Ohuhu 5 x 7 Heavyweight Folded Cardstock And A7 Envelopes for DIY Greeting Card, Wedding, Birthday, Invitations, Thank You Cards & All OccasionProfessional Quality: Envelopes and cards are made with natural white paper, designed to give each envelope and card a sleeker and more elegant feel. These cards are made of heavyweight strong cardstock. Each card is pre-scored and made of heavy weight 300 GSM cardstock (110lb) that feels thick and sturdy. Envelopes are 120 GSM weight, no see-through worries, protect your information. 100% acid-free and archival safe and are perfect for embossing, calligraphy, drawing and stamping.Compatible with Inkjet & Laser Printers: When you print on Ohuhu cardstock, your cards will look professionally printed. Ideal for your computerized artwork with LASER, INKJET & COPIER PRINTING, and you can also use them for crafting with markers and watercolors.Multiple Uses: Excellent for your office stationary, holiday greeting cards, birthdays, weddings, parties, showers, thank you cards, and invitations. Save money by making your own Invitations, Announcements. Perfect for kids to create their own birthday invitations or thank you notes. KID'S FAVORITE!STOCK UP: Ensure you always have greeting cards on hand for when occasions arise throughout the year.