Built for corporate and retail brands that need a structured file briefcase — not a quilted sleeve or leather satchel. MerrisBags runs this style on our polyester commute line: water-resistant shell, 15.6-inch shock-proof chamber, layered document pockets, and visible stitch-line detailing. Twelve years of workshop-direct OEM work; no off-the-shelf wholesale.
As a China OEM/ODM bag manufacturer based in Dongguan, MerrisBags produces to your spec. We hold no generic wholesale inventory — every run is contract-built for your brand.
Standard MOQ: 500 units per design and colorway (SKU P156BCLB-001).
Prototyping: Pre-production samples available for tech-pack verification (7–12 days lead time).
Water-Resistant Polyester Shell
The face fabric is lightweight polyester with C0 DWR treatment — a structured, abrasion-resistant substrate that holds a briefcase silhouette without the bulk of quilted nylon puffer sleeves. We seam-tape the laptop chamber perimeter, giving procurement teams a commuter bag that handles light rain without the laminate delamination common on mixed-material constructions.
Layered File Compartments
The front panel stacks two document pockets sized for A4 files and notepads, plus a quick-access slip for phone or transit pass. Documents stay flat in a separate zone from the laptop chamber — a layout corporate buyers specify over single-cavity sleeves that crease paperwork against device corners.
Stitch-Line Design Element
Visible topstitch runs along panel seams and pocket edges, reinforcing stress points while giving the briefcase a clean, office-appropriate profile. Contrast or tonal thread follows your CAD layout — useful for brands that want structure without the cost and weight of genuine leather trim.
15.6-Inch Shock-Proof Laptop Chamber
The padded compartment accepts devices up to 15.6 inches with 5 mm EVA foam on base and sides. Internal dimensions are 395 mm × 265 mm × 30 mm — we adjust foam density per your device spec sheet. Unlike soft quilted cotton sleeves, this chamber maintains rigid sidewalls through daily desk-to-meeting transit.
Lightweight Commute Profile
The structured body sits flat under the arm or on a shoulder strap without the weight penalty of leather satchels or oversized multifunctional PU totes. Anti-abrasion polyester handles repeated elevator, subway, and rideshare contact — a common failure point on cheaper file bags sold without proper shell weight specification.
Stock Colorways & Hardware
Blue, black, and grey ship from factory stock with #5 reverse-coil zippers and PU tape backing, cycle-tested to 5,000 pulls. PMS custom color matching is available at 500 pcs MOQ. Each unit passes AQL 2.5 inspection on zipper pull force, compartment depth, and DWR adhesion before carton packing.
Workshop-direct from Dongguan: 12+ years building polyester briefcases and file bags for export brands. Panel cutting, compartment assembly, and DWR validation on one floor.
CNC cutters handle polyester briefcase panels at ±1 mm tolerance. Bartack machines reinforce handle anchors and strap junctions before units move to final QC.
Sample room engineers build polyester business briefcase prototypes from your tech pack — testing laptop chamber fit, file pocket depth, and water-resistant shell adhesion before bulk cutting.
Built for laptop bag buyers who need spec sheets, not sales decks.
Juki computerized machines handle polyester shell and lining at controlled stitch density. Handle and strap junctions are sewn with double-needle construction for pull strength above 120 N.
Incoming fabric inspection, in-line bartack checks, and final packaging audit. Laptop chamber dimensions, zipper pull force, and DWR adhesion are logged per batch.
500-unit pilot runs for new collections; 20,000+ unit monthly capacity for repeat programs with dies already on file. Lead time holds at 25–30 days post sample approval.
Active BSCI audit status supports sourcing requirements from EU and North American retail chains. Ethical production documentation available on request.
Practical answers for buyers evaluating polyester file briefcases.
Quilted nylon and cotton styles prioritize soft padding for retail fashion lines. This polyester briefcase delivers structured file layers and a water-resistant shell — better suited to corporate commute and document-carry programs.
Front pocket depth and laptop chamber foam density are adjustable per your tech pack. Send device dimensions and file size spec — we cut a prototype before bulk dies are locked.
We run C0 DWR with 30-minute spray validation on every pre-production sample. PU zipper tape and reverse-coil pulls are standard — peel and adhesion tests logged per batch.
Send a tech pack or reference sample. We return a quoted BOM, sample timeline, and DWR test report within 48 hours.
Polyester delivers a structured, lightweight briefcase profile with water-resistant treatment at lower unit cost than genuine leather and without the bulk of quilted nylon puffer sleeves. We use matched polyester shell and lining for consistent abrasion resistance across daily commute cycles — a combination procurement teams prefer over mixed-material bags that delaminate at compartment seams.
The padded chamber accepts devices up to 15.6 inches with 5 mm EVA foam on base and sides, rated for shock-proof protection during transit and desk-to-meeting carry. Internal dimensions are 395 mm × 265 mm × 30 mm — we adjust foam density and chamber depth per your device spec sheet for rugged or slim form factors.
The front panel carries two stacked document pockets sized for A4 files and notepads, plus a quick-access slip pocket for phone or transit pass. The main body separates laptop and file zones so documents stay flat without contacting device corners — a layout corporate buyers specify for daily office commute programs.
Face fabric receives a C0 DWR spray at 80 g/m² followed by heat-curing at 160 °C for 90 seconds. Zipper tracks use #5 reverse-coil pulls with PU tape backing. Combined, the assembly passes a 30-minute spray test with under 2 g interior moisture gain — sufficient for light rain during a city commute.
Yes. Three factory colorways ship from stock — blue, black, grey — and we match any Pantone on the polyester shell and webbing at 500 pcs MOQ. The visible stitch-line design element can follow your CAD layout for contrast topstitch or tonal reinforcement seams.
MOQ is 500 pieces per style and colorway. Pre-production sample lead time is 7–12 days from approved tech pack. Bulk assembly runs 25–30 days after sample sign-off. Express air dispatch is available for reorders above 2,000 units with existing cutting dies on file.
