Puroma 2 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School, Gym, Sports, Fence, Toolbox, Gate, Case, Outdoor, Hasp Storage

Why I picked this lock

I wanted a simple, keyless way to secure a gym locker and a backyard gate, without moving into “high-security” territory. The Puroma 4-digit combination lock checked the right boxes: a two-pack for a fair price, weather-resistant construction, and a side-window design that promised one-handed code entry. After several weeks of daily use—indoors and outdoors—it’s proven to be a dependable, low-fuss solution with a few quirks worth knowing.

Build and design

The Puroma lock is a medium-sized, zinc alloy and steel padlock with a 4-digit dial. In hand, it feels solid and dense enough to inspire confidence without being bulky. The shackle has a sturdy profile suitable for most lockers, gates, and toolboxes. The finish on the body is even and resists casual scuffs. It’s not flashy; it looks like a tool meant to be used, not admired.

The defining design element is the side-window layout for the combination. Instead of reading digits across the top, you read them through a window on the side of the body. That seemingly small change matters in practice: it makes aligning and reading the code with one hand notably easier, especially when you’re holding a gym bag or working on a ladder. The dials are chamfered enough to grip, with positive detents that “click” into each numeral so you can feel when you’re on the right number.

Overall, the machining and assembly are tidy. There’s no rattle or wiggle in the shackle when locked, and the dial action is consistent across both locks in the pack.

Setup and everyday use

Setup is straightforward. Out of the box, I unlocked with the default code, followed the simple instructions to set a new combination, and confirmed it worked on both units. The reset action is mechanical and positive—you’re not guessing whether the new code “took.”

Day to day, this lock is easy to live with:

• One-handed operation is genuinely useful. I can pinch and roll the dials with my thumb, check the side window, and pop the shackle without putting anything down.
• The numbers are large enough to read at arm’s length in normal lighting. In dim locker rooms or outdoors after sunset, contrast could be better. You can still use it, but expect to glance twice when light is poor.
• The dial resistance hits a sweet spot: firm enough to avoid accidental changes, not so stiff that your fingers fatigue. With thin gloves, it’s usable; with thick winter gloves, it’s a bit fiddly, as most combination dials are.

One tip: after closing the shackle, give the dials a quick scramble. The detents are crisp enough that a half-turn per dial is all it takes.

Security and what it’s for

This is a 4-digit lock with 10,000 possible combinations—significantly better than the 3-digit locks that still populate a lot of gym lockers and storage sheds. For casual deterrence at a school, gym, or backyard gate, it’s appropriate. If your risk profile includes bolt cutters or a determined attacker with time and privacy, this isn’t the tool for that job. You’ll want a thicker shackle, a closed-shackle design, or a hardened, high-security lock.

What matters more than marketing numbers is practical resistance to opportunistic tampering. Here, the Puroma lock performs as expected: the shackle seats firmly with no sloppy play, the body resists casual prying, and the dial mechanism doesn’t feel loose or vulnerable to quick manipulation. It’s not security theater, but it’s not a bank vault either—and that’s the right trade-off for its intended uses.

Outdoor performance

Weather resistance was a key purchase factor for me. I hung one lock on a backyard gate for several rainy days and a couple of frosty mornings. The dials continued to turn smoothly, and the shackle didn’t seize or stick. I didn’t see any early signs of rust or pitting on the shackle or body.

Good practice for any outdoor combination lock still applies:

• Rinse off grit if it gets dusty or muddy.
• Use a light silicone or graphite lubricant on the dials and shackle 2–3 times a year.
• Avoid salt exposure when you can; if you live near the ocean or use it on a winter-exposed fence, plan on more frequent rinsing and occasional lube.

With basic care, I’d expect the lock to hold up well in most climates.

Fit and compatibility

“Medium” sounds vague, but in use it translates to versatile. I’ve had no trouble fitting the Puroma lock through:

• Standard gym and school locker hasps
• Toolbox hasps and small shed hasps
• Chain link gate latches

It’s not oversized, which is helpful for tight hasps, but you may find it too small for very thick chains or heavy hasp hardware. If you’re planning to secure a large chain or a commercial-grade hasp, check clearances first. For most consumer-grade hardware, it drops in without fuss.

Note: This isn’t a TSA-approved lock. If you need to secure luggage for air travel, look for a TSA model specifically.

Durability and maintenance

After a few weeks of daily open/close cycles, both units feel the same as they did on day one. The dials haven’t loosened, the detents are still crisp, and the shackle springs open cleanly. The finish shows minor micro-scratches from bumping around in a gym bag, but nothing dramatic.

Combination locks can be sensitive to grit and icing. The Puroma’s tolerances seem tight enough to resist light debris, but like any mechanical lock, it will be happier if you keep it clean. I’ve made a habit of:

• Blowing out the dial area if I notice dust
• Wiping the lock when exposed to dirt or salt
• Applying a tiny bit of dry lubricant to keep dials smooth

Simple habits like these extend life and reduce the chance of a sticky dial down the line.

Value

The two-pack structure is a strength. Practically, it lets you secure two locations with the same feel (and optionally the same code) or keep one as a spare. From a cost perspective, you’re getting a sturdy, weather-ready lock without paying for high-security features you might not need for everyday use.

Compared with more expensive combination locks I’ve used, the Puroma lock gives up a little in premium finish and perhaps in ultra-low-light visibility, but it matches or exceeds on usability and sturdiness. For lockers, sheds, gates, and toolboxes, that’s a smart trade.

What could be better

• Low-light legibility: The numbers are large, but the contrast isn’t perfect in dim conditions. A brighter digit paint or higher-contrast scheme would improve usability in locker rooms and night use.
• Thick-glove operation: The dials are grippy, but not glove-optimized. This is common across combination locks; still, slightly deeper knurling would help cold-weather users.
• No key override or recovery: As with most simple combo locks, if you forget your code, you’re out of luck. Write it down somewhere safe or store it in a password manager.

These aren’t deal breakers, but they’re worth noting so you’re not surprised.

Practical tips

• Choose a non-obvious code and avoid sequential or repeated digits.
• If using both locks in different locations, consider distinct codes to minimize the blast radius of a forgotten combo.
• Test fit your hasp or chain thickness before committing the lock to an outdoor install.
• For outdoor use, plan a quick clean-and-lube routine a few times a year.

Recommendation

I recommend the Puroma 4-digit combination lock for everyday, low-to-medium-risk security needs. It’s easy to set and operate one-handed, feels sturdier than its price suggests, and has held up well indoors and outdoors in my testing. The two-pack adds practical value, and the weather resistance is credible. If you need serious anti-theft measures or frequent low-light use, look elsewhere. For lockers, gates, toolboxes, and general storage, this is a reliable, straightforward choice that gets the fundamentals right.