These blank invitations are size 5x7 inches and will fit into an A7 or a Lee Envelope. Please note that these invitations are flat cards. These are not the folded style of invitations and these are not evenloes. They are inkjet and laser compatible, but check your printer specifications for printing and paper sizes. For the darker colors, printing on it's surface is not recommended. Layering a slightly smaller in size card with your printed information is recommend for the darker DIY Invitations.