Front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Angled front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Open view of the BANGE BG-G66 roll-top backpack showing front organizer pocket and internal laptop compartment on a white background
BANGE Trona backpack — side detail
BANGE Trona backpack — interior compartment
BANGE Trona backpack — in use
BANGE Trona backpack — feature detail
BANGE Trona backpack — lifestyle shot
BANGE Trona backpack — packed view
BANGE Trona backpack — size reference
BANGE Trona backpack — open view
BANGE Trona backpack — color option
Front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Angled front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Open view of the BANGE BG-G66 roll-top backpack showing front organizer pocket and internal laptop compartment on a white background
BANGE Trona backpack — side detail
BANGE Trona backpack — interior compartment
BANGE Trona backpack — in use
BANGE Trona backpack — feature detail
BANGE Trona backpack — lifestyle shot
BANGE Trona backpack — packed view
BANGE Trona backpack — size reference
BANGE Trona backpack — open view
BANGE Trona backpack — color option
Front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Angled front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Open view of the BANGE BG-G66 roll-top backpack showing front organizer pocket and internal laptop compartment on a white background
BANGE Trona backpack — side detail
BANGE Trona backpack — interior compartment
BANGE Trona backpack — in use
BANGE Trona backpack — feature detail
BANGE Trona backpack — lifestyle shot
BANGE Trona backpack — packed view
BANGE Trona backpack — size reference
BANGE Trona backpack — open view
BANGE Trona backpack — color option
Front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Angled front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Open view of the BANGE BG-G66 roll-top backpack showing front organizer pocket and internal laptop compartment on a white background
BANGE Trona backpack — side detail
BANGE Trona backpack — interior compartment
BANGE Trona backpack — in use
BANGE Trona backpack — feature detail
BANGE Trona backpack — lifestyle shot
BANGE Trona backpack — packed view
BANGE Trona backpack — size reference
BANGE Trona backpack — open view
BANGE Trona backpack — color option

Bange Trona BG-G66 Waterproof Polyester Backpack

The Bange Trona BG-G66 is an expandable business-casual backpack (35–45L) in waterproof nylon-polyester with YKK zippers and anti-theft pockets. It fits a 15.6" laptop and tablet with room for travel essentials.

$74.99 USD
$83.32 USD
Color: Black
Model: BG-G66
🚚 Free shipping over $49.99 ⏱ Delivers in 5 to 9 business days 🔒 Secure checkout

1️⃣ WATERPROOF NYLON + POLYESTER – SPLASH-RESISTANT DURABILITY – The BANGE BG-G66 Trona is built from high-density waterproof nylon and polyester with a splash-resistant coating that protects your gear in light rain and humid conditions. Durable, crafted to withstand daily commutes and spontaneous trips while keeping a sleek, professional profile.
2️⃣ EXPANDABLE 35L–45L 2-IN-1 DESIGN – SLIM BY DAY, TRAVEL-READY BY NIGHT – Switch instantly between a streamlined briefcase-style backpack and an expanded 45-liter travel mode to match your day. From a compact daily carry to longer days on the go, the BG-G66 adapts effortlessly to whatever your schedule demands.
3️⃣ FITS 15.6" LAPTOP + 9.7" TABLET – ORGANIZED TECH PROTECTION – A dedicated 15.6-inch laptop compartment, a 9.7-inch tablet sleeve, and a multi-compartment layout keep your tech, documents, clothes, and daily essentials secure and organized. Extra padding shields your devices from shocks and bumps in transit.
4️⃣ ANTI-THEFT HIDDEN POCKET + CARDHOLDER + YKK ZIPPERS – TRAVEL-SAFE SECURITY – A hidden anti-theft pocket and secure cardholder keep passports, cash, and ID safe, while premium YKK zippers deliver smooth, reliable access through years of daily use. Smart security built for crowded commutes and international travel.
5️⃣ HEAT-RELEASE BREATHABLE PADDING – STAY COOL, CARRY UP TO 10KG – Sweat-resistant sponge padding and breathable back mesh keep you cool and odor-free during long wear, while adjustable arcuate shoulder straps and premium buckle hardware comfortably support loads up to 10 kg. All-day comfort at just 1.1 kg.
6️⃣ 48×17×30 CM (EXPANDS TO 48×30×30) | 1.1 KG | YKK BUILD – BUSINESS, SCHOOL & TRAVEL – Lightweight at 1.1 kg and expanding from 48 × 17 × 30 cm to 48 × 30 × 30 cm, the BANGE BG-G66 Trona pairs premium YKK zippers and softback construction with smart, adaptable design. Whether biking to the office, jetting to a meeting, or heading to campus, it elevates your everyday with reliable, organized, waterproof performance.

Front view of the BANGE BG-G66 roll-top backpack with buckle strap and front zip pocket on a white background
Bange
Bange Trona BG-G66 Waterproof Polyester Backpack
$74.99 USD
$83.32 USD

BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content
BANGE BG-G66 Trona A+ content

The BANGE BG-G66 Business Casual Expandable Backpack blends sleek, professional design with high-performance functionality — perfect for business professionals, students, and travelers who demand comfort, organization, and style. Built from high-density waterproof nylon and polyester, this backpack is durable, splash-resistant, and crafted to withstand daily commutes and spontaneous trips.

With a capacity ranging from 35L to 45L and a lightweight 1.1kg build, the BG-G66 transitions seamlessly from slim business mode to travel-ready mode. Use it as a streamlined briefcase-style backpack or expand it for those longer days on the go. The unisex design fits effortlessly into both professional and casual wardrobes.

Inside, a dedicated laptop compartment (15.6"), a tablet sleeve (9.7"), and a multi-compartment layout offer organized storage for tech gear, documents, clothes, and daily essentials. Additional thoughtful features like an anti-theft hidden pocket, YKK zippers, anti-theft cardholder, and heat-release sponge padding make this backpack truly ready for modern life.

Key Features Include:

  • Expandable Design – 2-in-1 Style
    Slim daily carry? Extended travel day? Switch between compact and expanded mode for ideal storage and aesthetic.
  • Waterproof & Durable Nylon Fabric
    Built with high-density splash-proof nylon and polyester lining to protect your items in light rain or humid conditions.
  • Laptop & Tablet Ready
    Secure compartments for up to a 15.6" laptop and a 9.7" tablet, with extra padded protection for safety in transit.
  • Advanced Organization
    Multiple compartments, including an internal patch pocket, make room for daily items, tech, clothes, and documents.
  • Anti-Theft Hidden Pocket & Cardholder
    Keep passports, cash, or ID secure with strategically hidden pockets and a travel-safe card slot.
  • Heat-Release Breathable Padding
    Sweat-resistant sponge and back mesh paneling keep you cool and odor-free during long wear.
  • Convertible Carry Comfort
    Adjustable arcuate shoulder straps and soft handle with premium buckle hardware hold up to 10kg with ease.
  • Premium Details Throughout
    Features smooth, high-quality YKK zippers, letter pattern styling, and durable softback structure for long-lasting daily use.
  • Size & Weight
    Standard Mode: 48 × 17 × 30 cm
    Expanded Mode: 48 × 30 × 30 cm
    Weight: 1.1 kg

Why You Should Buy

If you’re a student, commuter, or professional who needs a backpack that adapts to your lifestyle — this is it. The BANGE BG-G66 is more than just storage: it’s smart security, smart organization, and smart design. With expandable capacity, anti-theft tech, breathable materials, and premium construction, this bag is built for movement and modernity.

Whether you're biking to the office, jetting to a meeting, or heading to campus, this backpack elevates your everyday with reliable, organized, and waterproof performance.

Specifications
Model BANGE BG-G66 Business Casual Expandable Backpack
Material High-Density Waterproof Nylon and Polyester with Splash-Resistant Coating
Capacity Expandable 35 L – 45 L (Compact Daily Mode or Travel Mode)
Weight 1.1 kg (Lightweight for Business or Travel Use)
Dimensions Standard: 48 × 17 × 30 cm | Expanded: 48 × 30 × 30 cm
Laptop & Tablet Compartment Fits 15.6″ Laptop & 9.7″ Tablet with Extra Padding for Device Protection
Organization System Multi-Compartment Interior with Patch Pockets for Clothes, Tech & Documents
Security Features Hidden Anti-Theft Pocket & Secure Cardholder for Passports or ID Storage
Comfort & Ergonomics Heat-Release Sponge Padding & Breathable Mesh Back for All-Day Cooling Comfort
Carrying Options Adjustable Arcuate Shoulder Straps & Soft Handle with Premium Buckle Hardware (Up to 10 kg)
Hardware & Finish Premium YKK Zippers & Letter Pattern Styling with Softback Construction for Durability
Best For Business Professionals, Students & Travelers Seeking Smart Security and Organization

Shipping is free on orders over $49.99. Below that, standard rates apply, and you can see them on our Shipping Policy page.

Changed your mind? You have 30 days from the day your order arrives to send it back, for any reason. Full terms are in the Return Policies tab below.

If a bag is not right for you, send it back. You have 30 days from the day it arrives, and you do not need to give us a reason.

We just ask that it comes back the way it left us:

  • Unused and undamaged, with the tags still on
  • In its original packaging
  • Boxed properly for the trip back, ideally in the carton it arrived in
  • With your order number or receipt

If you are sending it back because you changed your mind, the return postage is yours. Email support@bangeofficialstore.com with your order number before you ship anything and we will send you the right return address.

If your bag turned up damaged or faulty, or we sent the wrong one, that is on us. We pay the return postage and either replace it or refund you in full.

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