Product Information
Our envelope-style security bags are a versatile, reusable solution designed to securely transport documents, notes, and other important items while providing a clear tamper-evident mechanism when used with ZipLock security seals. Each bag features a specially designed zipper housing that requires a ZipLock seal to lock, and every seal carries a unique serial number that is logged for traceability, ensuring any attempt at unauthorised access is instantly detectable.
Constructed from high-quality, durable material with embedded mesh, these envelope-style bags provide added strength and visible tamper evidence if the mesh is compromised. Their slim, compact design makes them ideal for transporting letters, contracts, or confidential documents without adding bulk, and they fit easily into briefcases, drawers, or document storage systems.
A heat-welded internal window allows for notes, delivery instructions, or reference cards to be securely attached and viewed from inside the envelope, keeping sensitive information protected from external access. The envelope-style design, combined with ZipLock sealing, makes these bags perfect for banks, corporate offices, legal firms, and government agencies that require secure, traceable, and efficient document handling solutions.
By blending strength, tamper-evidence, and practicality, these envelope-type security bags offer a reliable way to protect critical documents during transit or storage, giving organisations confidence that their sensitive materials remain safe.
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Comparison Table
| Carry bag | Envelope type bag | Pouch bag | Cash bag | Round top cash bag | Clear bag | Clear kit bag | Ballot bag | BB6 bag | Linen bag | |
 |  |  |  |  |  |  |  |  |  | |
| dimensions | B1: 300 x 250 x 50mm B2: 350 x 250 x 75mm B3: 400 x 300 x 100mm B4: 460 x 350 x 100mm B6: 460 x 350 x 200mm R2e: 650 x 270 x 120mm | E1: 250 x 200mm E2: 300 x 250mm E3: 400 x 300mm E4: 460 x 360mm E5e: 370 x 330mm E6e: 480 x 430mm E7: 480 x 320mm K2: 280 x 150mm | P1: 300 x 250 x 50mm K1: 240 x 150mm (30mm lower gusset) | CB250: 250 x 270mm (50mm lower gusset) CB350: 350 x 430mm (50mm lower gusset) CB2e: 260 x 350mm (20mm lower gusset) | CBR190: 190 x 280 x 60mm | C1: 240 x 150mm (30mm lower gusset) C2: 250 x 270mm (50mm lower gusset) C3: 340 x 395mm C4: 300 x 250 x 50mm C5s: 240 x 180 x 50mm | CK1: 300 x 230 x 160mm CK2: 400 x 300 x 100mm | BB1: 300 x 300 x 480mm | BB6: 1000 x 550 x 300mm | L1: 540 x 420 x 790mm |
| material | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | pvc tarpaulin | polyester twill |
| locking closure | zipLock eyelet | zipLock eyelet | ziplock | zipLock eyelet | ziplock | ziplock | ziplock | eyelet | eyelet | eyelet |
| feature | barcode internal window external window | barcode internal window | barcode internal window | barcode internal window | internal window | barcode internal window external window | barcode internal window | internal window | internal window | drawstring handle straps cord lock |
Specifications
| Features | Heavy duty. Flame retardant. Internally accessible window. High quality PVC & polyster sandwich. Used in conjunction with ZipLock. No tools required to remove seals. |
| Material | PVC tarpaulin |
| Colours | Red Blue Green |
| Dimensions | Length: 460mm Height: 360mm |
| Markings | B-Sealed tags and logo Serial numbers Barcodes * Note that some bags do not have serial numbers and barcodes |
| Feature | Internal window |
| Applications | Cash handling and banking operations — transporting cash, coins, or deposit slips securely between branches or to financial institutions. Retail environments — transferring daily takings, vouchers, or receipts between store locations and headquarters. Confidential document transfer — safely moving contracts, reports, or classified paperwork between departments or offices. Courier and postal services — ensuring tamper-evident transport of valuable or sensitive packages. Law enforcement and evidence storage — securing evidence or exhibits while maintaining transparency for inspection. Government and administrative offices — moving official documents or ballots securely between facilities. Healthcare facilities — transferring medical records, test results, or controlled substances with accountability. Airlines and logistics — securing onboard cash, keys, or sensitive documents during transit. Educational institutions — safely storing or transporting exam papers, results, or administrative files. Utilities and corporate sectors — protecting sensitive materials, ID cards, or access keys used in operations. |