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Grey compact combination lock box shown open with cash, cards and a passport, and closed with its security cable
Portable combination lock box

Portable Combination Safe (with Security Cable)

Lock it, tether it, walk away.

$18.99One-time · free tracked shipping
  • Steel cable tethers it downLoop it around a seat frame, bunk rail, or locker bar so the box can't just be lifted and carried off.
  • Keyless four-dial combinationSet a code only you know. Nothing to lose in a pocket, a locker, or the sea.
  • Sized for what you can't leave loosePhone, wallet, cash, cards, passport, keys, earbuds.
  • Nothing to chargeFully mechanical. No batteries, no app, no monthly fee.
Free tracked shipping 30-day returns Tested before shipping
Portable Combination Safe (with Security Cable) $18.99

The bag you have to leave behind

Most theft is opportunity, not effort.

A wallet in a glovebox, a phone in a gym bag, a passport in a hostel room. Nothing about them is hidden, and nothing about them is fixed in place, so taking them costs a few seconds and no risk.

This box removes both. The combination stops the casual hand, and the cable means the box itself can't be lifted and opened somewhere quieter.

A lock stops the hand. The cable stops the whole box walking away.
4dials
set your own code
1cable
tethers it down
0batteries
fully mechanical
9.6in
wide, packs flat
Where it earns its keep

Anywhere you have to leave your things unattended.

In the car at a trailhead or a beach car park, tethered out of sight under a seat. In a gym or pool locker that closes with nothing more than a latch.

In a hotel room, a hostel bunk, or a shared dorm, looped to something fixed so it stays put while you're out.

CarGym lockerHotel and hostelDorm
Set it once

Pick a code, then tie it down.

1

Open it

Use the starting code from the guide to open the box.

2

Set your code

Choose a four-digit combination that's easy for you, hard to guess.

3

Test it

Close and reopen on your new code before you rely on it.

4

Tether it

Run the cable around something fixed, then lock the loop into the box.

No app, no batteries, no monthly fee. Just a mechanical lock and a cable.
Layer your defense

A locked stash, and an alarm on the room.

The box keeps what you carry behind a code while you're out. The TremShield Alarm covers the window or door at home, sounding at 125dB if anyone forces it.

See the alarm
A locked stash, and an alarm on the room.
Good to know

Questions, answered calmly

It tethers the box to something solid so it can't be picked up and carried away to be opened later. Loop it around a car seat frame, a bunk rail, or a locker bar.
A phone, wallet, cash, cards, a passport, keys, earbuds. It is sized for the things you carry, not for documents or folders.
A four-dial combination you set yourself, so there's no key to keep track of at a gym, a beach, or a shared room.
No. It's a portable lock box built to stop opportunist theft. It is not a rated anti-theft, fireproof or waterproof safe.
No. The lock is fully mechanical, so there's nothing to charge or replace.
Roughly 9.6 by 6.1 inches and 2.4 inches tall (24.4 x 15.5 x 6.1 cm), so it packs flat in a bag or slides under a car seat.

From the security guide

Where to Keep Cash, Documents, and Valuables Safe at Home

A calm, organized plan to protect what is irreplaceable from both theft and fire, in one afternoon, no expensive floor safe required. Whe...

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