Clear Backpack with TSA Lock
- Casual Daypack
- 1 cu ft
- Zipper
- Polyvinyl Chloride (PVC)
Recommended for its size, TSA lock and expanding main compartment, with one reported strap failure worth weighing for heavy daily student use.
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How it ranks among the 22 casual daypacks we track
4.2★ across 54 Amazon ratings, Bayesian-smoothed toward the category average.
54 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
500+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 22 casual daypacks we track - how the scorecard works · full casual daypacks data report. Confidence: medium - useful but incomplete evidence.Updated 6 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
An 18 inch clear backpack from Flowston built from thickened 0.5mm PVC, with a TSA-approved lock, a 15.6 inch laptop sleeve, and reflective tape on the straps and side pockets for visibility at night.
A TSA lock is what sets this apart from most clear backpacks, which usually skip locking hardware entirely. Owner reviews back up the expanding, suitcase-like main compartment, though one flags a strap failure after just two weeks of school use.
- 18 x 13 x 7.5 inch capacity
- TSA-approved lock included
- 0.5mm PVC over an oxford cloth bottom
- Reflective tape on straps and side pockets
Who it's for
Travelers and students who want an extra-large clear backpack that locks and can expand like packing cubes, more than someone who just needs the smallest bag that clears a security check.
What buyers say
From Amazon customer reviews.
Buyers say it holds a 2 inch binder plus everything else needed for school, and like the mesh pockets and TSA lock, with several calling it sturdier and bigger than expected. One reviewer reported a shoulder strap breaking after about two weeks of daily use by a 7th grader and called it a quality issue.
Strengths and trade-offs
Drawn from this product's published specifications.
- Main compartment expands and opens flat like a suitcase, per reviewers
- TSA-approved lock actually included
- Holds a 2 inch binder plus full school supplies
- Reflective tape on straps and mesh pockets for night visibility
- One reviewer's shoulder strap broke after about two weeks of daily 7th grade use
- No dedicated luggage strap for stacking on a rolling bag
Performance notes
The 0.5mm PVC is thicker than typical clear-bag plastic and is paired with an oxford cloth bottom and double cross stitching at the strap anchors, which is what lets the main compartment expand about 5 inches and open fully at the bottom the way a small suitcase would.
Specifications
| Brand | Flowston |
|---|---|
| Dimensions & fit | |
| Item Dimensions D x W x H | 7.5 × 13 × 18 inches |
| Size | Large |
| Compatible Device Size Maximum | 15.6 inches |
| Fit to Size Sentiment | Positive |
| Apparel Fabric Weight Class | Heavyweight |
| Capacity & performance | |
| Storage Volume | 1 cu ft |
| Age Range Description | Adult |
| Construction & materials | |
| Material Type | Polyvinyl Chloride (PVC) |
| Shell Type | Soft Shell |
| Outer Material | Polyvinyl Chloride |
| Color | Black |
| Apparel Fabric Stretch | No Stretch |
| Included components | |
| Backpack Harness Type | Shoulder Harness |
| Unit Count | 1 |
| Backpack Design | Daypack Backpack |
| Other details | |
| Apparel Closure Type | Zipper |
| Strap Type | Adjustable, Padded Strap |
| School Type | College, Elementary School, High School, Middle School |
| Sport Type | Multi-Sport |
| Fit Type | Adjustable |
| Number of Compartments | 4 |
| Number of Items | 1 |
| Number Of Pockets | 6 |
| Product Care Instructions | Wipe with Damp Cloth |
| Import Designation | Imported |
| Other Special Features of the Product | Adjustable, Breathable, Heavy Duty, Laptop Compartment, Padded Strap |
| Product Style | Tsa-approved Lock Backpack |
| Recommended Uses For Product | Gym, Leisure, Sport, Travel, Work |
| Water Resistance Level | Waterproof |
| Lining Description | Polyester |
| Pattern | Solid |
How it compares
This product against the closest alternatives we track in casual daypacks.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Clear Backpack with TSA LockThis product | 4.2 / 5 | 54 | 4.0 / 5 |
| abshoo Classical Basic Womens Travel Backpack For College Men Water Resistant Large…abshoo | 4.6 / 5 | 18,700 | 4.6 / 5 |
| PUMA unisex-adult Contender Backpack with Laptop SleevePUMA | 4.7 / 5 | 16,900 | 4.6 / 5 |
| Nike Unisex Varsity Elite BackpackNike | 4.7 / 5 | 4,000 | 4.6 / 5 |
| JanSport Big Plans BackpackJanSport | 4.7 / 5 | 2,600 | 4.6 / 5 |
Similar casual daypacks from other brands
Questions about the Flowston casual daypacks
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Flowston backpack include a real TSA lock?
Yes, a dedicated TSA-approved lock is included and secures the main compartment zippers.
Will it fit a 15.6 inch laptop?
Yes, the main compartment has a laptop sleeve sized for up to 15.6 inches.
How durable is the strap?
Most reviewers call the bag sturdy and well built, though one reported a strap breaking after about two weeks of daily student use.