A dust bag looks simple, and it is wrong in many ways: a suit bag five centimetres short leaves the hem creased against the base, flannel swapped for thin nonwoven reads as a giveaway in the showroom, and a drawstring channel finished with a single overlock burst open the first time a customer pulls it. It is neither a fabric version of the hanging poly bag nor a shrunken nonwoven tote — it is a category of its own, sitting between storage protection and brand presentation.

1. Three Bags People Confuse: Dust, Hanging, Tote

Type Job Typical material Key spec
Dust bag Garment storage, sample room, showroom, gifting Flannel, PP nonwoven, cotton canvas, PEVA GSM, stitching, drawstring strength
Hanging bag Single-use transit pack before retail PE, CPE, LDPE clear film Thickness, vents, warnings
Nonwoven tote Store carry, event giveaway Laminated nonwoven 80–120 g Load, handle strength, print

The three are inspected on different logic: dust bags on hand feel and stitching, hanging bags on thickness and mandatory warnings, totes on load. Quoting a dust bag on polybag grammage usually gets it returned from the sample room — it is opened and closed for months on a rail, and thin material pills within two weeks.

2. Four Materials: Hand, Breathability, Moisture and Cost

Material Feel and look Best for Watch out
Flannel 180–260 g Fine nap, premium look, lifts surface dust Suits, coats, eveningwear, bag gift pouches Dark shades catch lint; large multicolour print is hard
PP nonwoven 70–120 g Crisp, cheap, takes multicolour screen print Mid-market garments, footwear, e-commerce volume Pills with rubbing; not for repeated use
PEVA 0.12–0.20 mm Waterproof, clear window, low odour Sea freight, humid climates, storage where the style must be visible Not breathable — ventilate for long storage; feels plasticky
Cotton canvas 8–12 oz Sturdy, durable, washable, natural Premium gifting, bags, reusable retail packaging Cost climbs fast with weight; needs washing and setting
💡 Rule of thumb: 200 g plus flannel for suits and coats, 180 g flannel or 10 oz canvas for bags, PEVA with a window plus desiccant for garments that travel by sea. One brand, three uses — do not force one material across all three.

3. Construction: Drawstring, Zip, Window, Binding

  • Twin drawstring, one exit each side, is the default: the mouth closes tightly and garments stay in. A single drawstring saves one operation but closes only one side, and long coats work their way out
  • Keep the cord channel at least 12 mm wide and lock it with two stitch rows: an overlocked-only channel lets go after a few pulls or one wash
  • A zip version, often a half zip on suit covers, speeds up showroom handling, but keep the teeth turned inward so they cannot catch the cloth; No. 5 YKK and up is the safe grade
  • Make the PEVA window a 15–20 cm horizontal band, 10 cm below the mouth: the style is visible without exposing the whole garment and its price ticket

4. Sizing: Work Back from Garment Length

Use Typical bag size (W × H cm) Garment
Men's suit cover 60 × 100–110 74–78 length, hanger included
Long coat cover 62 × 135–145 110–120 length
Dress cover 55 × 110–125 95–115 length, hem included
Shirt or knit pouch 30 × 40–45 Folded flat, drawstring pouch
Handbag pouch Longest side + 5–8 cm, square

Two hard rules: allow 10–15 cm above garment length for the hanger hook and the base, and 8–10 cm over shoulder width, or the sleeve head takes a hard crease that a day on the rail will not drop. Women's tailoring is narrower at the shoulder but higher at the sleeve head, so scaling straight from a men's size usually comes out tight.

5. Printing and Brand Presence

  • Screen print in one to four colours dominates: a single-colour logo reads best on flannel, and above two colours keep the area small or the print goes stiff
  • Heat transfer handles gradients and photo-level artwork but washes poorly — keep it for gift pouches that will not be laundered
  • A sewn woven label is the premium move: a 25 × 40 mm label inside the mouth or at the lower-left front adds little cost and changes the perceived grade
  • On dark cloth, lay white first, twice, then colour: one pass does not cover, and show-through after washing is the ugliest failure

6. Export and Inspection: Five Checks

  • Grammage: ±5% is normal; over 8% spread inside one batch means mixed material, and the shade difference shows in a showroom
  • Stitching: 3–4 mm pitch with at least three backstitches at each end; the base and cord opening take the load, so turn the bag inside out
  • Drawstring: hold at least 5 kg per side after knotting, and hot-cut or tip the ends — a raw end frays into a brush within a month
  • Odour: open the sealed carton and smell — solvent or sour notes mean dye or adhesive is not fully cured, and it migrates into garments, dark fabrics worst
  • Mould: humidity inside a sea container can pass 80%, and flannel and cotton canvas spot first — add a container desiccant or one sachet per bag

For the EU, REACH applies too: dyes free of banned aromatic amines, and phthalate reports for PEVA and coated cloth. Ask for those documents at quotation stage — chasing them at inspection rarely beats the sailing date.

7. Six Decisions Before Sampling

  • Use case: storage, showroom, gifting or e-commerce dispatch — four different weights and structures
  • Sizes against measured garments: give length, shoulder and sleeve, not just S/M/L
  • Material and grammage: state 180 g or 220 g — quotes follow grammage, and one vague word is one cost tier
  • Construction: cordon type, zip or window, binding method, reinforced base or not
  • Brand treatment: print method, colour count, logo size and position, with vector AI or PDF
  • Packing and export: individual polybag or not, units per carton, destination port, REACH reports needed

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Need dust bags or garment covers to match? Send the garment type, measured length and shoulder, the use case and your logo file; we come back with three tiers (nonwoven, flannel, cotton canvas) plus drawstring and binding details, and ship physical samples in 3–7 days.

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