Generic Kraft Envelopes Mailers Bubble Padded Usable Size 3" x 6" Pack of 100pcs (1) Usable Size: 75 x 150mm, 3" x 6" approx. (Not include area outside of seal). Total Size: 95 x 150+40mm, 3.7" x 6"+1.6" approx. (2) Usable Size: 100 x 175mm, 4" x 7" approx. (Not include area outside of seal). Total Size: 120 x 175+40mm, 4.7" x 7"+1.6" approx. Material: Kraft and Plastic Kraft bubble padded envelope excellent for packing small item The padding is sufficient to mail small and the items that needed protection. Keep your product safety during shipping