Harvest season

Harvest Is Coming. Are Your Buds Protected?

Flower that dries out or molds costs a season. ruksak puts humidity control inside the bag — now in 1 lb and 1/2 lb.

Pick your size

1 LB$47.99 1/2 LB$29.99

See how it works Compare the two sizes

62%

RH inside the bag

months, unopened

packs to insert

Harvest Is Coming. Are Your Buds Protected?

62% RH built in

No packs to buy

Biodegradable fiber

No salt, no liquid

Child-resistant zipper

Reseals every time

Lab-verified

Measured to day 60

From the grow

One bag. Nothing to insert.

Open, fill, seal. The humidity control is already in the bag wall.

Why growers switch

Humidity control and packaging in one bag

All-in-ONE

No packs to insert or buy
Every batch cures the same way

2-Way Humidity Control

Fiber absorbs and releases moisture as needed
Holds 62% RH up to 12 months unopened

Proven Science

25+ years protecting museums, electronics, pharma
Food-contact compliant, compostable fiber

Fiber tech inside

Four layers, no humidity pack

The fiber absorbs moisture when the air is damp and releases it when the air is dry — holding the bag near 62% RH.

Inside the bag wall

Child-resistant zipper

Reseals every time

Opaque proprietary film

Blocks light

Breathable film

Lets the fiber read the air

2-way humidity control fiber

Set to 62% RH

Open the bag

Nothing to unwrap.

Place flower inside

After harvest or during curing.

Seal and store

The fiber holds it steady.

Choose your size

Two sizes. One technology.

Same fiber, same zipper, same window. Pick the size that matches your batch.

ruksak humidity control bag in two sizes — 1/2 LB at 264 × 351 mm and 1 LB at 330 × 400 mm, next to a phone for scale

Most popular Best for Home Grown | Cannabis Storage Bag with 62% RH | ruksak 1 lb | 10 pcs

1 LB

10 bags per pack

$47.99$4.80 per bag

Holds: Up to 1 lb / 454 g
Bag size: 330 × 400 mm
Window: Wide rectangular

Best for

Full-pound runs — curing a harvest or moving weight to a buyer.

View full details

1/2 LB

10 bags per pack

$29.99$3.00 per bag

Holds: Up to 1/2 lb / 227 g
Bag size: 264 × 351 mm
Window: Round

Best for

Half-pound lots and strains kept separate. Less headspace, steadier RH.

View full details

Both sizes include

Built-in 62% RH two-way fiber
Child-resistant zipper
Clear check window
Biodegradable plant fiber
Lasts up to 12 months

Tested, not claimed

60 days on an independent lab bench

No salts. No liquids. Plant fiber holding a steady microclimate.

MCR Labs, Massachusetts — 7 g ruksak sample. Results vary with ambient conditions and how often the bag is opened.

59.8%

RH at day 30

57%

RH at day 60

salts or liquids

From the field

What growers say

Growers running ruksak on real harvests.

I have tested these bags out. I highly recommend you take advantage of this technology, truly a game changer. No liquid salts! I tested these out with absolutely dried out flowers and within just a day or two, it freshen it up — but truly, this is how you preserve that artwork of yours.

Joe@citygrownruksak 1 LB

Their ruksak system keeps your pounds fresh with precision moisture control baked into the inner membrane. No extra packs. No games. Just next-gen cannabis preservation built by real scientists.

Carver Johns@carverjohnsruksak 1 LB

Goes in, comes out the same way. It stays exactly where you want.

Keith SavianoNimbus Cannabis Co.ruksak 1/2 LB

FAQs for ruksak

What is ruksak?

A cannabis storage bag with two-way humidity control built into the bag wall — in 1 lb and 1/2 lb. Instead of buying separate packs and inserting them one by one, the control is integrated into the bag using plant fiber technology, so flower stays stable at 62% RH for up to a year. ATMOSIScience spent 25+ years protecting artifacts in museums, electronics, and pharmaceuticals before cannabis. Two products became one piece.

1 lb or 1/2 lb — which size?

Same fiber, same 62% RH target, same zipper and window. Only capacity differs. 1 lb (330 × 400 mm) is the working size for a harvest run — curing full pounds or moving weight to a buyer. 1/2 lb (264 × 351 mm) suits half-pound lots, small-batch strains kept separate, or any time a 1 lb bag would sit half empty. Less empty headspace means less air to condition, so RH settles faster and holds steadier.

How is it better than the bags I already use?

Regular mylar bags are passive barriers — they slow moisture loss but don’t regulate it, so flower still loses weight, terpenes, and value over time. ruksak is active. The fiber absorbs or releases moisture to hold a stable 62% RH for up to 12 months, with no extra packs. Other bags store cannabis; ruksak preserves it.

How does it keep flower fresh?

Freshness comes down to stability. Every humidity swing means terpenes evaporate and moisture escapes. The patented plant fiber membrane in the bag wall works like an intelligent sponge — absorbing excess moisture when it’s humid, releasing it when it’s dry — for a balanced microclimate that holds steady around 62% RH.