#0 6×10 Self-seal Natural Kraft Bubble Envelopes. #0 Kraft Bubble 6″x10″. #00 Kraft Bubble 5″x10″. #000 Kraft Bubble 4″x8″. #1 Kraft Bubble 7.25″x12″. #2 Kraft Bubble 8.5″x12″. #3 Kraft Bubble 8.5″x14.5″.