
WATERFLY Packable Sling Backpack
- Storage Volume: 0.2 cu ft
- Size: Small
- Item Weight: 0.55 pounds
- Strap Type: Cross-Body
Last refreshed Sep 9, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A foldable crossbody sling for daily essentials, not the hiking pack its category label suggests.
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ASIN: B08CBTRYY4Model: XB-E01Category: Hiking Daypacks
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Overview
This is a small, packable sling bag that folds into its own zip pouch, sized between a fanny pack and a full backpack. Despite the hiking daypack category it is filed under, the listing describes it as a crossbody daypack for a wallet, phone and small tablet rather than overnight hiking gear.
The category label on this listing points to hiking daypacks, but the actual dimensions, about 14.6 x 7.8 x 3.5 inches expanded, and the seller's own description of it as bigger than a fanny pack but smaller than a backpack say otherwise. Treat it as a foldable everyday crossbody bag rather than a pack meant to carry trail gear.
- Folds down to about 7 x 4 x 2.6 inches
- Reversible strap adjustable up to 43 inches
- Water-resistant polyester with SBS zippers
- Breathable mesh padded back panel
Who it's for
Someone who wants a light bag for a phone, wallet and small essentials that folds flat into a suitcase or larger bag when not in use. Not a fit for anyone needing real hiking pack capacity for water, layers or trail gear.
Pros and cons
- Folds flat into its own pouch for storage
- Reversible strap wears on either shoulder
- Water-resistant polyester with SBS zippers
- No buyer review data included with this listing
- Small capacity despite the hiking daypack category label
Performance notes
The bag folds into its own interior zip pouch, shrinking from roughly 14.6 x 7.8 x 3.5 inches down to about 7 x 4 x 2.6 inches for storage. The strap is reversible using D-rings on either side so it can sit across the left or right shoulder, and a mesh padded back panel is meant to keep it from feeling stiff against the body.
Specifications
| Brand | WATERFLY |
|---|---|
| Model | XB-E01 |
| Dimensions & fit | |
| Size | Small |
| Item Weight | 0.55 pounds |
| Backpack Harness Size | Adjustable |
| Apparel Fabric Weight Class | Lightweight |
| Fit to Size Sentiment | Positive |
| Item Dimensions D x W x H | 14.5 × 7.9 × 3.5 inches |
| Compatible Device Size Maximum | 12 inches |
| Capacity & performance | |
| Storage Volume | 0.2 cu ft |
| Age Range Description | Adult |
| Construction & materials | |
| Outer Material | Polyester |
| Material Type | Polyester |
| Fabric Type | Polyester |
| Apparel Fabric Stretch | No Stretch |
| Color | Black |
| Shell Type | Soft Shell |
| Included components | |
| Backpack Design | Daypack Backpack |
| Backpack Harness Type | Shoulder Harness |
| Unit Count | 1 |
| Other details | |
| Strap Type | Cross-Body |
| Water Resistance Level | Water Resistant |
| Fit Type | adjustable |
| Number of Compartments | 1 |
| Number Of Pockets | 2 |
| Apparel Closure Type | Zipper |
| Lining Description | Polyester |
| Item Shape | Rectangular |
| School Type | High School |
| Sport Type | Hiking |
| Number of Items | 1 |
| Import Designation | Imported |
| Pattern | Solid |
| Product Style | Sling Backpacks |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Travel |
| Style Number | XB-E |
| Subject Character | Sports |
| Embellishment Feature | Plush Accent |
| Other Special Features of the Product | Lightweight |
Closest rivals on specs
EVANCARY Mini Sling Backpack Crossbody Bag- Item Weight 0.55 vs 0.44 pounds (+25%)
- Storage Volume 0.2 vs 0.5 cu ft (-60%)
BECOJADDE Foldable Packable Hiking Daypack 15L- Item Weight 0.55 vs 0.68 pounds (-19%)
- Storage Volume 0.2 vs 0.5 cu ft (-60%)
AMJ Crossbody Sling Bag Chest Daypack- Storage Volume 0.2 vs 0.6 cu ft (-67%)
Frequently asked questions
Is the WATERFLY sling bag actually a hiking backpack?
No, despite the category it is listed under, the seller describes it as sized between a fanny pack and a full backpack, meant for a wallet, phone and small items rather than hiking gear.
Does the WATERFLY sling bag fold up for storage?
Yes, it folds into its own interior zip pouch down to roughly 7 x 4 x 2.6 inches.
Can the strap be worn on either shoulder?
Yes, the strap uses 3D rings on the lower part so it can connect to either the left or right D-ring.