One bag for work, travel, and adventure - expandable, waterproof, and built to last.
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Color: Black
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Capacity: 45L
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Laptop Fit: Up to 17.3 inches
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Main Material: Oxford fabric (waterproof)
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Lining Material: Polyester
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Backpack Type: Softback
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Handle/Strap Type: Soft handle & padded shoulder straps
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Exterior: Silt pocket
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Closure Type: Zipper
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Expandable Design: Switch between everyday use and travel mode with extra capacity
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Large Capacity (45L): Spacious enough for laptops, clothes, books, and gear
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Waterproof Oxford Fabric: Protects your essentials from rain and wear
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17.3" Laptop Compartment: Secure interlayer for large laptops and devices
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Comfort-Focused: Padded shoulder straps and soft handle for easy carrying
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Multi-Purpose Use: Perfect for business trips, hiking, school, or weekend travel
This expandable waterproof laptop backpack is designed for those who need both versatility and durability. With a 45L capacity and expandable compartments, it easily adapts to your needs-whether for daily commuting, a weekend trip, or outdoor adventures. Its dedicated padded sleeve fits laptops up to 17.3 inches, while multiple compartments and an exterior silt pocket provide organized storage for clothes, books, and accessories.
Made from high-quality waterproof Oxford fabric with a strong polyester lining, this backpack ensures long-lasting use and protection in all weather. Comfortable padded straps and a soft handle make carrying effortless, even when the bag is fully packed. Stylish and practical, it's the perfect all-in-one backpack for students, professionals, travelers, and hikers.
At Primebay, we’re committed to making your shopping experience seamless and worry-free. Below you’ll find details on how we process and deliver orders within Australia.
Order Processing
Orders are processed within 1–2 business days after payment confirmation.
Once shipped, you’ll receive a confirmation email with tracking details.
Shipping Times
Our products are shipped directly from our trusted suppliers. Delivery times vary depending on the item and supplier location:
Standard Shipping (Australia-wide): 5–10 business days
Remote/Rural Areas: May require additional 3–5 business days
(Note: Delivery times are estimates and may be affected by , weather conditions, or peak holiday periods.)
Shipping Fees
Free standard shipping on all orders.
Tracking Your Order
All orders come with tracking.
Tracking details may take 2–4 business days to update after dispatch.
Incorrect Address
Please ensure your delivery details are correct when placing your order.
Primebay is not responsible for delays or lost parcels due to incorrect addresses.
Delays & Lost Packages
If your order has not arrived within 30 business days, please contact us at for assistance.
In the case of a lost package, we’ll send a replacement or issue a full refund.
Warranty & Returns
1. Change of Mind Returns
We offer a 30-day Change of Mind return policy, giving you confidence when shopping with us.
If you change your mind about your purchase, you can return your item within 30 days of receiving it for a full refund.
To be eligible for a Change of Mind return:
The item must be unused, unworn, and in its original packaging (including all accessories, tags, and manuals).
You must provide a receipt or proof of purchase.
No restocking fees apply.
Return postage for Change of Mind returns may be at the buyer’s expense, unless otherwise stated.
Please contact us before sending your return to obtain instructions and ensure smooth processing.
2. Warranty & Faulty Items
All our products are covered by a 12-month warranty against manufacturing defects.
If your item develops a fault within the warranty period, please contact us so we can assist with a repair, replacement, or refund, in line with the Australian Consumer Law (ACCC Consumer Guarantees).
To process a warranty claim, you may be asked to provide:
A detailed description of the issue, and
Clear photos or videos showing the fault.
Please note that warranty claims do not apply to damage caused by misuse, neglect, or normal wear and tear.
3. Need Help?
If you have any questions about returns or warranty claims, please contact our customer service team — we’re happy to help.