The 4X7 Kraft Bubble Mailer Padded Envelopes are self-sealing shipping bags suitable for packaging and shipping. Designed for unit packaging, these envelopes provide a durable and secure solution for sending items. The Kraft material adds strength and protection, while the bubble insulation ensures that delicate items are well-protected during transport. Ideal for businesses and industrial use, these mailers offer a reliable way to send packages safely and efficiently.