Stash & storage
by Tightvac
The Pocket Stashbox iVAC is a vacuum-tight storage container that keeps your herb fresh and your surroundings smell-free. At just 7.3cm across and 2.5cm tall, it sits flat in a jacket pocket, coin pocket, or bag without drawing attention. Press the lid down, the one-way valve pushes air out, and you've got a proper vacuum seal — not just a rubber gasket pretending to do the job.
| Variant | SKU | Notes |
|---|---|---|
| White | HS0225 | Shows dirt fastest — wipe it down now and then |
| Black | HS0226 | Most discreet, blends into any pocket or bag |
| Blue | HS0227 | Easy to spot in a drawer full of stuff |
All three are identical in size and function — 7.3cm diameter, 2.5cm height. The only difference is the shell colour. If discretion matters most, go black. If you keep losing things in your bag, the blue stands out.
Most stash containers rely on a friction-fit lid or a silicone ring. They keep things tidy, but they don't remove air from the equation. The iVAC works differently: press the lid down and a patented one-way valve expels air, creating a partial vacuum inside. That does two things at once — it locks odour molecules in and slows down the oxidation that dries out trichomes and degrades terpenes over time.
We've had customers come back after leaving herb in one of these for a fortnight and tell us it smelled like it was just ground. That tracks. Oxygen is what breaks down the volatile compounds that give cannabis its aroma and flavour. Remove most of the oxygen, and you slow that process right down. It's the same principle behind vacuum-sealed food storage — just shrunk to pocket size.
The honest limitation: this isn't a full laboratory vacuum. It won't preserve flower for months the way a proper vacuum-sealed bag would. But for day-to-day transport and short-term storage — a weekend away, a festival, keeping a small amount fresh between sessions — it outperforms every screw-top jar and silicone pot we carry. The seal is firm enough that we've turned one upside down and shaken it without the lid popping. Try that with a standard stash tin.
| Spec | Value |
|---|---|
| Diameter | 7.3 cm |
| Height | 2.5 cm |
| Seal type | One-way vacuum valve |
| Material | BPA-free plastic |
| Odour-proof | Yes — vacuum-tight |
| Available colours | White (HS0225), Black (HS0226), Blue (HS0227) |
| Capacity | Fits approximately 2–3g of ground herb |
| Weight | Lightweight — barely noticeable in a pocket |
Carrying more than a couple of grams? The full-size TightVac containers use the same vacuum valve technology in larger formats — from 0.06L all the way up to 2.35L. Pair the Pocket Stashbox with a proper grinder so your herb is ready to go the moment you open the lid.
Pick one up and the first thing you notice is how light it is — almost suspiciously light, like it might be flimsy. It isn't. The plastic has a slight flex to it, which is by design: you need to press the lid down to engage the vacuum valve, and rigid walls would fight you on that. The lid clicks into place with a satisfying little pop. You can feel the resistance when you pull it open again, which tells you the seal is doing its job.
The interior is smooth, no ridges or textures where material can get stuck. A quick wipe with a dry cloth or a cotton bud and it's clean. The 7.3cm diameter is roughly the size of a drinks coaster — flat enough to slide into a jeans pocket without creating an obvious bulge. At 2.5cm tall, it's thinner than most smartphones. We've seen people tuck these into jacket breast pockets, festival bumbags, even the coin pocket on a pair of jeans.
One thing to watch: the vacuum valve works best when the container isn't packed to the brim. Leave a few millimetres of headroom so the lid can compress and push air through the valve. Overfill it and you're just using it as a regular sealed container — still decent, but you're not getting the vacuum benefit you paid for.
A regular metal tin or silicone jar does one job: it holds your stuff. The Pocket Stashbox iVAC does three. It holds, it seals, and it actively removes air. That third function is what separates it from the dozens of stash containers on the market. A silicone jar might claim to be "smell-proof," but open one after a day and your nose will disagree. The iVAC's vacuum valve creates negative pressure inside the container, which means odour molecules physically cannot escape until you break the seal.
If all you need is a container to hold a few rolling papers and a lighter, save your money and grab a basic tin. But if you're carrying herb on public transport, storing it near housemates who'd rather not smell it, or just want your stash to taste the same on Friday as it did on Monday — the vacuum seal is worth the small step up.
Yes, when the vacuum seal is properly engaged. The one-way valve removes air from inside the container, trapping odour molecules under negative pressure. We've tested this behind the counter — sealed one up, left it on the shop shelf for a week, zero smell until the lid came off.
Roughly 2–3 grams of ground material, or a couple of small buds. It's designed for pocket-sized portions, not bulk storage. Leave a few millimetres of headroom for the vacuum seal to work properly.
Absolutely. The vacuum seal works on anything small enough to fit. Customers use them for microdose capsules, loose-leaf tea, spices, even small jewellery pieces they want to keep from tarnishing. If it fits and you want it fresh, the iVAC handles it.
Wipe the interior with a dry cloth or slightly damp cotton bud. Avoid submerging it — water in the valve mechanism can compromise the seal. For stubborn residue, a touch of isopropyl alcohol on a cloth works well. Let it air-dry fully before resealing.
The valve is built to last through thousands of open-close cycles. Over years of heavy daily use, the seal may soften slightly. If you notice the lid no longer clicks firmly or you stop feeling resistance when opening, it's time for a replacement — but most people get well over a year of solid performance.
That's exactly what it's built for. At 7.3cm wide and 2.5cm tall, it's smaller than a hockey puck. Slides into a pocket, bag, or glovebox without any fuss. The vacuum seal means no smell leaks during transport.
Purely cosmetic. Black, white, and blue all use the same vacuum valve, same dimensions (7.3cm x 2.5cm), same material. Black is the most discreet. Blue is easiest to find in a cluttered drawer. White looks clean but shows marks faster.
Last updated: April 2026
