The KROSER 17.3-inch Laptop Backpack with USB Charging Port is KROSER’s mainstream 17-inch travel bag, sized for desktop-replacement-class gaming laptops, with a USB pass-through, water-repellent polyester shell and around 30L of organized capacity for around $40. This KROSER backpack review covers build, laptop protection, organization, comfort and verdict.
KROSER Laptop Backpack Large Computer Backpack Fits up to 17.3 Inch Laptop with USB Charging Port Water-Repellent Travel Backpack Casual Daypack for Business/College/Women/Men-Charcoal Black
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KROSER 17.3″ USB at a Glance
| Component | Specification |
|---|---|
| Laptop compartment size | Fits up to 17.3-inch laptops |
| Total capacity (L) | Approximately 30L main compartment |
| Material | Water-repellent polyester with PU-coated zippers |
| Water resistance | Water-repellent (DWR) coating — handles light to moderate rain |
| USB charging port | Yes — external USB-A pass-through with internal cable (power bank not included) |
| RFID-blocking pocket | Not on this base USB model — see KROSER XL Hard Shell for RFID |
| TSA-friendly checkpoint | Partial — main compartment opens wide but is not a true 180-degree lay-flat |
| Anti-theft features | Hidden rear zippered pocket against wearer’s back; lockable main-compartment zipper pulls |
| Approximate price | around $40 |
Build Quality & Materials
KROSER builds the 17.3-inch around water-repellent polyester with PU-coated zippers and reinforced double-stitching at every stress point — the standard mid-range build that the under-$50 bracket has converged on. The polyester is a mid-weight weave, lighter than the 1680D denier of premium SwissGear bags but heavier than the lightweight polyester of the Lenovo B210. The DWR coating handles light to moderate rain and the standard daily spill but is not designed for sustained downpours. Stitching is competent for the price — KROSER has years of experience iterating on this bag and the build has been polished by reviewer feedback. The zippers are PU-coated to keep dust out and the main-compartment zipper pulls accept a TSA padlock. For several years of mixed daily and travel use, the build is well judged.
Laptop Protection & Padding
The dedicated laptop compartment is sized for laptops up to 17.3 inches diagonal — wide enough for a desktop-replacement-class gaming laptop such as the ASUS ROG Strix G18 review or a 17-inch Legion. The sleeve is foam-padded on the back, side and bottom walls and sits against the bag’s padded back panel, the safest position. Padding density is moderate-high, a real step up from the basic foam of budget Lenovo and Volher bags but a step below the premium high-density foam of SwissGear or the rigid hard-shell of the KROSER XL Hard Shell. The sleeve secures with a velcro retention strap. For the daily commute and the typical carry-on travel use case, the protection is well judged. For rough air travel with a $3,000 gaming laptop, the KROSER XL Hard Shell or SwissGear 1900 is the correct upgrade.
Storage & Organization
The KROSER organizes around 30L across three zones. The dedicated laptop compartment takes the rear position. The main compartment opens wide for easier packing and holds a change of clothes, a hoodie, peripherals and a power supply with room to spare. The front organizer panel includes pen loops, cable straps, key clip and a small zippered pocket — the standard organizational layout for this bracket but executed with KROSER’s typical care. The hidden zippered back pocket sits against the wearer’s back and protects passport and cash from pickpockets. A separate front pocket holds the USB-cable kit. Side mesh pockets accept a water bottle or folding umbrella. A built-in luggage strap on the rear panel slides the bag onto a roller suitcase handle. The USB pass-through is well executed — the external USB-A port is positioned high on the side of the bag for easy access to a charging cable to your phone while the power bank stays sealed in the interior pocket.
Comfort & Carry — Straps / Back Panel
The KROSER fits contoured padded shoulder straps with a sternum strap to take load off the shoulders for longer carries. The back panel is foam-channeled with vertical air-flow grooves — mainstream comfort engineering for the price, well executed. The top haul handle is padded webbing. Under a full 30L load with a 17-inch gaming laptop and a weekend’s clothes, the bag is comfortable for a 30-minute commute or a half-day of airport-to-hotel travel; for all-day all-out airport comfort with a heavy gaming laptop, the SwissGear 1900’s suspended-mesh back panel and waist strap are the next step up. For the daily commute and weekend travel use case, the KROSER’s comfort is well judged.
Use Cases — Daily / Travel / Esports Tournament
The KROSER 17.3-inch USB is purpose-built for the gamer-student or work-from-anywhere user who carries a 17-inch laptop daily and takes the occasional weekend trip. The 17.3-inch sleeve, the USB pass-through, the hidden rear pocket and the comfortable contoured straps cover the essentials for this use case. It is also a strong esports tournament bag for the attendee carrying a 17-inch gaming laptop, peripherals and a change of clothes to a LAN event — the 30L capacity is well judged for this load. It is less well suited to two groups. Office commuters who only carry a 15-inch laptop on a 20-minute metro ride will find the bag oversized — the Lenovo B210 or Volher Slim is the correct bag. Frequent flyers wanting TSA fast-pass and lifetime warranty should look at the SwissGear 1900 ScanSmart instead. For the daily 17-inch carrier on a budget, the KROSER 17.3-inch is the value pick.
Verdict — Is the KROSER 17.3″ USB Worth It?
At around $40 the KROSER 17.3-inch USB is a strong choice for the gamer-student or work-from-anywhere user who carries a 17-inch laptop daily. The 17.3-inch padded sleeve, the USB pass-through, the hidden anti-theft rear pocket, the lockable zipper pulls and the comfortable contoured straps cover the essentials for the price. The compromises are honest: water-repellent only, no RFID-blocking pocket on this base model, and the comfort engineering is mainstream rather than premium. For the buyer pairing it with a 17-inch laptop from the best RTX 5070 gaming laptops roundup, it is the value pick. Frequent flyers wanting lifetime warranty and ScanSmart TSA sleeve should step up to the SwissGear 1900; buyers needing rigid impact protection should step up to the KROSER XL Hard Shell.
Pros: 17.3-inch padded laptop sleeve; USB charging passthrough; hidden anti-theft rear pocket; lockable main-compartment zipper pulls; comfortable contoured straps; luggage strap; KROSER’s polished build for the price.
Cons: Water-repellent only, not waterproof; no RFID-blocking pocket; not a true 180-degree TSA lay-flat sleeve; mainstream rather than premium comfort engineering.
Frequently Asked Questions
Does the KROSER include a power bank?
No — the USB charging port is a pass-through, meaning you supply your own power bank inside the bag and the cable routes to an external USB-A port. Pair it with any USB-A power bank from our power bank buyer’s guide.
Will a 17-inch gaming laptop fit in the KROSER 17.3-inch?
Yes — the sleeve is sized for laptops up to 17.3 inches diagonal and comfortably swallows a 17-inch gaming laptop such as a Lenovo Legion 17. For thicker 18-inch desktop-replacement laptops see the KROSER 18.4-inch XXXL.
Is the KROSER waterproof for heavy rain?
No — the DWR coating handles light to moderate rain but in a sustained downpour the contents will eventually wet through. Carry a separate rain cover for serious weather.
What is the difference between the KROSER 17.3-inch USB and the KROSER XL Hard Shell?
The 17.3-inch USB is the mainstream soft-shell version with USB pass-through; the XL Hard Shell adds a rigid impact-resistant front panel, a Saferoom RFID-blocking pocket and more padding — at a higher price. Choose the USB model for daily use, the Hard Shell for frequent air travel.
More Gaming Backpack Reviews
- KROSER XL 17.3″ Hard Shell Saferoom RFID Backpack Review
- KROSER 18.4″ XXXL Gaming Backpack Hard Shell Review
- MATEIN 17″ Travel Work Laptop TSA Carry-On Review
- NUBILY 17″ Waterproof TSA Travel Anti-Theft Review
- Lenovo Legion Active 17″ Gaming Backpack Review
- Lenovo Legion 17″ Armored Gaming Backpack Review
- MATEIN Extra Large 17″ TSA Anti-Theft Backpack Review
- Lenovo Laptop Backpack B210 15.6″ Water-Repellent Review
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