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Quick Picks
| Product | Best For | Standout Published Specs | Link |
|---|---|---|---|
| Eylar SRX-175 Overlanding Cargo Case – 175L Waterproof Dry Box for Truck Bed | One large sealed hard case for truck bed or rack duty | 47.2" x 18.4" x 17.9" external, 38.5 lbs, gas strut lid, 4 lockable latches | Check Price on Amazon |
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Last Updated: September 2026
Look, a 47-inch rotomolded box is not an impulse buy. It is a mounting decision, a weight decision, and a bed-space decision all at once, and the spec sheet has to earn it before your truck does.
This review is a close read of the published listing data for the Eylar SRX-175, nothing more and nothing less. This website does not do hands-on testing, so everything below is drawn from the manufacturer's published specifications and listing feature bullets as retrieved on 2026-09-11, plus arithmetic and inference clearly labeled as such.
- Massive 175L Capacity – External: 47.2"L x 18.4"W x 17.9"H fits most full-size truck beds & roof racks; Internal: 42.5" x 12.7" x 13.2"; Weight: 38.5 lbs
- 100% Waterproof Seal – Heavy-duty rubber gasket keeps contents bone-dry in rain, mud, creek crossings, and pressure washing; protect electronics, sleeping gear, food, and more
Review at a Glance
- Best For: Overlanders, hunters and truck-bed users who want one large sealed, lockable hard case with hands-free lid operation and built-in interior organization
- Pros:
- Limitations:
Overview: What the Listing and Specifications Show
The Eylar SRX-175 is a rotomolded hard-shell cargo case aimed at overlanding, hunting, camping and general off-road gear hauling. Eylar lists rotomolded hard case construction with an impact-resistant shell. The headline capacity figure is 175L.
The manufacturer's listing puts external dimensions at 47.2 inches long by 18.4 inches wide by 17.9 inches high, with internal dimensions of 42.5 by 12.7 by 13.2 inches and a weight of 38.5 lbs. The listing positions that footprint as fitting most full-size truck beds and roof racks.
Here's the thing: that positioning is marketing language about typical fit, not a compatibility guarantee for your specific bed, rack or crossbar spread. Treat it as a starting point and measure.
Key Features & Specifications
| Specification | Published figure or claim |
|---|---|
| Capacity (stated) | 175L |
| External dimensions | 47.2" L x 18.4" W x 17.9" H |
| Internal dimensions | 42.5" x 12.7" x 13.2" |
| Weight | 38.5 lbs |
| Construction | Rotomolded hard case, impact-resistant shell |
| Sealing | Heavy-duty rubber gasket, described as a 100% waterproof seal |
| Lid | Hands-free gas strut lid that stays propped open |
| Latches | 4 heavy-duty lockable latches, padlock-compatible (padlock sold separately) |
| Organization | 2 removable interior organizer trays + divider; cargo net included |
| Drainage | Built-in drain plug |
| Stacking / mounting | Flat top and bottom, described as stackable and mount-ready; reflective stickers included |
| Colors | Black, Gray, Tan, Green |
| Returns | 30-day return policy |
All figures above come from the Amazon listing for this exact ASIN, retrieved 2026-09-11. Check Price on Amazon
Expected Performance, Based on Manufacturer and Listing Data
The capacity number and the internal dimensions do not line up
This is the single most important thing a buyer should notice. Multiply the listed internal dimensions of 42.5 by 12.7 by 13.2 inches and you get roughly 7,125 cubic inches, which works out to about 117 liters — well short of the 175L headline. That is arithmetic on the manufacturer's own published numbers, not a measurement taken here.
There are ordinary explanations. A capacity figure can be quoted to the brim including lid dome volume, or it can reflect a different measurement convention entirely. But the two published values describe different amounts of space, and a 58-liter gap is not a rounding error.
So plan your packing against the internal dimensions, which are the numbers that tell you whether a 40-inch rifle case, a Rotopax, or a stack of Front Runner-style tubs actually drops in. If the volume figure is decisive for you, ask Eylar to confirm how the 175L is measured before you buy.
Waterproofing: read the scope of the claim
Eylar's listing describes a 100% waterproof seal built around a heavy-duty rubber gasket, which it says keeps contents dry in rain, mud, creek crossings and pressure washing. That is a seller claim about a sealed lid interface, and it is a meaningful one for anyone hauling sleeping bags, camera bodies or dry food on an open rack.
What it is not: an independently verified IP rating, a submersion rating, or a guarantee of a dust seal specification. The supplied listing information does not state an IP code or a third-party certification. A gasket-sealed rotomolded box is the right architecture for weather sealing, but the strength of the evidence here is a manufacturer claim, not a lab result.
Gas strut lid and drain plug
A hands-free gas strut lid is listed as staying propped open on its own so you can load with both hands. On a 47-inch lid, that is more than a convenience item — the inference is that you avoid one-handed juggling at the tailgate, though the listing does not state a strut force, cycle life or cold-weather rating.
The listing also describes a built-in drain plug that lets the case double as an improvised cooler when filled with ice and simplifies cleanup after wet hauls. Note the wording: improvised cooler. There is no stated insulation value or ice-retention figure in the supplied information, so treat it as a rinse-and-drain convenience with occasional cooler duty, not as a replacement for an insulated cooler with a published retention spec.
Organization and security
The listing states the case ships with 2 removable interior organizer trays plus a divider, and a cargo net for top-layer retention of loose items. In a box that is only 12.7 inches wide internally, trays matter; long narrow cavities swallow small items otherwise.
Four heavy-duty lockable latches are listed as padlock-compatible, with the padlock sold separately. Four latch points spread across a 47-inch lid is a sensible layout for gasket compression, and padlock compatibility is real deterrent hardware. It is still a plastic case, and the listing does not claim any security rating or theft-resistance standard.
Build Quality & Design
Rotomolding is the right process for this job: a seamless one-piece wall with thick corners, which is why the format dominates hard-case coolers and expedition boxes. Eylar's listing describes an impact-resistant shell built for rough trails, drops and extreme weather.
The listing describes a flat top and bottom stackable, mount-ready design and includes reflective stickers for low-light visibility. Flat surfaces are what make stacking sane. What the supplied listing information does not state is a maximum stacking load, a lid standing or seating rating, or a mounting hardware specification — so do not assume you can stand on the lid, load a second heavy box on top, or bolt it down a particular way without checking Eylar's own instructions.
Eylar's listing states a 30-day return policy and lists Black, Gray, Tan and Green color options. A return window is not a warranty; the supplied listing information does not state a warranty length.
Mounting, Weight and Fit: The Part Buyers Get Wrong
Start with 38.5 lbs. That is the empty case, per the listing, and it counts against every limit in the chain before you put a single item inside.
If you are rack-mounting, the binding numbers are your roof rack's dynamic load rating, the crossbar manufacturer's limit, and your vehicle's roof load specification — each defined differently, and each of which must include the case plus its contents. A cargo box's own volume says nothing about how much weight your rack may legally carry. Pack a 175L box to its physical limit with tools and water and you can blow past a typical roof rating without noticing.
For bed mounting, confirm the 47.2-inch length and 18.4-inch width against your bed rails, wheel wells and tonneau clearance, and confirm the 17.9-inch height against any cover or cab clearance you need. One length and one width do not establish fit across every truck or rack system.
Secure it with hardware rated for the job and follow Eylar's instructions; the supplied listing information does not include a mounting kit specification or torque guidance, so do not improvise a drilling or bracket scheme from a product page. Never drive with the lid unlatched. If you want background on load terminology, see our guide to roof rack weight limits explained.
Value for Money
Check current price on Amazon, because the honest value question here is what you get per dollar of sealed, lockable volume. On paper, the SRX-175 bundles things that are often upsells elsewhere: two organizer trays and a divider, a cargo net, a gas strut lid, a drain plug and reflective stickers, all listed as included. The padlocks are not.
Against that, the supplied listing information leaves several buyer-relevant numbers unstated — no stacking capacity, no IP rating, no warranty term — and the 175L versus internal-dimension discrepancy is unresolved. If you need certified numbers on paper for a fleet or duty purchase, that gap matters. If you need a big sealed box for personal overlanding gear, it probably does not.
Eylar SRX-175 Overlanding Cargo Case – 175L Waterproof Dry Box for Truck Bed — Best for overlanders who want one long, sealed, lockable box
The specification that earns this pick is the 42.5-inch internal length combined with a gasket-sealed lid and four padlock-compatible latches: it is long enough for recovery boards trimmed to fit, axes, long-handled tools and rifle-length cases, and it locks shut at a trailhead. That is a specific job, and the published specs suit it.
It suits the overlander or hunter running a bed rack or full-size bed who would rather manage one big sealed container than five soft duffels. It suits less well anyone with a short bed, a low tonneau, or a roof rack whose published dynamic rating leaves little headroom after 38.5 lbs of empty case.
Who Should Buy This
- Full-size truck owners with bed space to spare. The 47.2-inch external length is the gating dimension; measure between your wheel wells and bulkhead first.
- Gear organizers. Two removable trays, a divider and a cargo net mean the box arrives with a system instead of a cavern.
- Anyone loading in the rain or at night. The gasket seal, drain plug and reflective stickers are all listed features aimed at weather and low-light use.
- Buyers who want lockable storage. Four padlock-compatible latches, with padlocks purchased separately.
How We Research
This website does not perform hands-on or laboratory testing, and it does not own the products it covers. For this page, the research consisted of reading the Amazon Creators API verified product record for ASIN B0DWZXYZWT and every product listing feature bullet published on that listing, retrieved 2026-09-11.
From there, the work is analytical: comparing published dimensions against the published capacity figure, separating manufacturer claims from independently verified ratings, and identifying which buyer-relevant specifications the listing does not state. Where a figure is absent, this page says so rather than guessing. For recall and safety information on consumer products generally, the U.S. Consumer Product Safety Commission publishes recall and consumer product safety information at cpsc.gov, and USA.gov maintains general consumer protection guidance for buyers at usa.gov.
Frequently Asked Questions
The manufacturer's listing puts external dimensions at 47.2 inches long by 18.4 inches wide by 17.9 inches high, with internal dimensions of 42.5 by 12.7 by 13.2 inches and a weight of 38.5 lbs. Use the internal figures for packing decisions and the external figures for fit.
Is the Eylar SRX-175 actually waterproof?
Eylar's listing describes a 100% waterproof seal built around a heavy-duty rubber gasket, which it says keeps contents dry in rain, mud, creek crossings and pressure washing. That is a manufacturer claim; the supplied listing information does not state an IP rating or an independent certification, so it is not verified submersion performance.
Does the SRX-175 hold 175 liters of gear?
The headline capacity figure is 175L, but multiplying the listed internal dimensions gives roughly 117 liters, so the two published numbers describe different amounts of space. Pack against the internal dimensions and ask Eylar how the 175L figure is measured if volume is your deciding factor.
Can it be used as a cooler?
The listing describes a built-in drain plug that lets the case double as an improvised cooler when filled with ice and simplifies cleanup after wet hauls. No insulation value or ice-retention time appears in the supplied listing information, so treat cooler use as occasional rather than as a substitute for a rated cooler.
Are padlocks included?
No. Four heavy-duty lockable latches are listed as padlock-compatible, with the padlock sold separately.
Can I stack two of these on a roof rack?
The listing describes a flat top and bottom stackable, mount-ready design, but the supplied listing information does not state a maximum stacking load. Before stacking, confirm Eylar's stacking guidance and verify that your rack's and vehicle's published dynamic load limits cover the empty case weight of 38.5 lbs per box plus all contents.
What warranty does it come with?
Eylar's listing states a 30-day return policy and lists Black, Gray, Tan and Green color options. A warranty length is not stated in the supplied listing information.
Final Verdict
The Eylar SRX-175 reads like a well-specified expedition box on paper: rotomolded shell, gasket-sealed lid, four padlock-compatible latches, a strut lid that frees both hands, trays and a net in the box, and a drain plug for the mess afterward. For a full-size bed or a substantial bed rack, that combination covers the real jobs a big dry box has to do.
Two caveats keep this from being an unconditional recommendation. The 175L figure does not reconcile with the published internal dimensions, and the listing is silent on stacking load, IP rating and warranty term. Neither is disqualifying, but both are worth a question to Eylar before you commit — especially if you are rack-mounting, where every pound of the 38.5 lb empty weight competes with your cargo.
Buy it if the 42.5-inch internal length fits your gear and the external 47.2 by 18.4 by 17.9 inches fits your bed. Skip it if your rack rating is tight or you need certified specifications on paper. Check Price on Amazon
Sources & Methodology
No one on this site has lifted, mounted, hosed down or loaded this case — there is no workshop, no rack rig and no lab behind this page. What sits behind it is a line-by-line reading of the Amazon Creators API verified product record and the product listing feature bullets for ASIN B0DWZXYZWT, captured 2026-09-11, with the published dimensions checked arithmetically against the published capacity claim. For a hard cargo case, that level of research is enough to tell you whether the box will physically fit your bed or rack, what hardware and organization arrive with it, and which performance claims are the seller's rather than an independent rating — but it cannot tell you how the gasket or strut hold up over seasons of trail use.