Why ZhiWei

Your Reliable Bag Factory — From Sample to Scale

88+ skilled workers, 100% in-house production, zero outsourced steps. Here's why 30+ countries trust us.

MOQ Starting at 300 PiecesTest new products without tying up cash — prove market demand first, then scale as your sales grow.
7–10-Day Sample TurnaroundGet production-accurate samples in 7–10 days — validate fit, materials, and build quality before committing to bulk.
100% Pre-Shipment InspectionEvery unit in every order is checked against your approved sample — so bulk always matches what you signed off on.
Full OEM & ODM CustomizationStructure, materials, color, hardware, printing — every element is customizable to your brand's specification.
BSCI ISO 9001 GRS

Get Your Free Quote

Tell us about your bag project — we'll respond within 24 hours with specific answers, pricing, and a tailored production plan. No sales pressure.

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Size & Fit

Choose for dimensions, capacity, volume, weight, fit and airline-size intent.

An everyday backpack and a flap-top rucksack compared from the front, back, and open side on a product-development table
2026年9月19日

Rucksack vs Backpack: How to Make the Right Choice

Compare rucksacks and backpacks by name, opening, support, fit, capacity, and use so you can specify the construction instead of relying on a label….

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Four backpacking backpacks arranged by capacity at a mountain trailhead
2026年7月19日

What Size Backpack for Backpacking? A Practical Size Guide

Find the right backpack size for backpacking by trip length, gear volume, season, base weight, and capacity from 28L ultralight packs to 60L+….

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Two unbranded backpacks compared during product capacity development

How to Measure a Backpack: Dimensions, Volume, and Fit

Learn how to measure backpack dimensions, liter capacity, torso fit, and carry-on size using geometric estimates and ASTM-based physical testing….

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Three everyday backpacks showing compact standard and larger capacity profiles
2026年7月14日

Standard Backpack Size Guide for Everyday Use

Compare standard backpack sizes in liters and inches for work, school, laptops, travel, fit, sports, and custom OEM product development….

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20 liter backpack shown beside a ruler and everyday carry items for scale
2026年7月13日

How Big Is a 20L Backpack? Visual Size Guide

See how big a 20L backpack is, typical dimensions, what fits inside, and how it works for travel, school, laptops, hiking, work, and the gym….

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Hiker locating torso measurement landmarks for backpack fitting
2026年7月11日

How to Measure Torso for Backpack Fit

Learn how to measure torso for backpack fit from C7 to the iliac crest, measure your hip belt, avoid sizing mistakes, and test the final fit….

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Kindergarten-size backpacks shown beside common school supplies

What Size Backpack for Kindergarten Is Best?

Learn what size backpack for kindergarten fits a child, folders, lunch, and school supplies, plus practical guidance for parents and B2B buyers….

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Slim backpack fitting under an airplane seat as a personal item
2026年7月8日

Does a Backpack Count as a Personal Item?

Learn when a backpack counts as a personal item, common underseat size limits, airline examples, packing checks, and sourcing tips for travel bags….

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Small medium and large insulated lunch bags shown side by side
2026年7月7日

What Size Is a Lunch Bag? Standard Sizes and Dimensions

Learn standard lunch bag sizes, dimensions, and capacities for kids, office meals, family use, meal prep, bulk orders, and custom manufacturing….

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