There are various types of courier bags that are commonly used for shipping in India, including: Poly Mailers: Lightweight and waterproof bags made of polyethylene.  documents, and small electronic devices. Bubble Mailers: Added layer of protection in the form of bubble wrap. Security Bags: Security bags are tamper-evident bags for shipping high-value items such as cash, jewelry, and important documents. Courier Envelopes: Courier envelopes are ideal for shipping documents, brochures, and other lightweight items. Tamper Proof Bags: Tamper-proof bags are used for shipping valuable items that need to be kept secure during transit.