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A wood humidor can lose moisture through its seal and cedar walls, especially in a dry room, so choosing the right humidity level matters as much as choosing the pack size. The Boveda 72% Humidity Control Pack, Size 320 is a large, two-way humidity pack made for dry environments and wood storage setups that need a higher RH target. It automatically releases or absorbs moisture to work toward 72% relative humidity without water refills, gels, or beads. It is a strong fit for the right humidor, but 72% RH is not the best choice for every cigar storage setup.
Quick Verdict
Rating: Recommended with caveats
Best For: Dry environments, drafty wood humidors, and buyers who specifically want a 72% RH target.
Bottom Line: The Size 320 gives you high-capacity, zero-refill two-way humidity control in one large pack. The tradeoff is that 72% RH is a specialty target, so buyers with airtight storage or a preference for drier cigars may be better served by a lower RH option.
| Specification | Detail |
|---|---|
| Brand | Boveda |
| Model | B72-320-OWB |
| Product type | Two-way humidity control pack |
| Target humidity | 72% RH |
| Size | Size 320 |
| Capacity | 320 g |
| Dimensions | 0.82 x 6.75 x 5 in |
| Quantity | 1 pack |
| Formula | Salts and water sealed inside a membrane |
| Power | No external power required |
| Coverage guidance | Up to 5 lb (2.5 kg); listing also recommends one Size 320 per 100 total items the container can hold |
| Replacement cue | Replace when the pack becomes hard and crunchy; lifespan varies with the container and climate |
Key Takeaways
- This exact ASIN is the large Size 320 single pack, not a Size 60 pouch or multi-pack.
- 72% RH is a specialty cigar-storage level that makes the most sense in dry environments or drafty humidors.
- The pack uses two-way humidity control, releasing moisture when conditions are dry and absorbing moisture when conditions are too humid.
- The Size 320 pack has a 320 g capacity and measures about 0.82 x 6.75 x 5 inches.
- You do not refill or recharge it. Replace it when it becomes hard and crunchy.
- Do not mix different Boveda RH levels or combine Boveda with other humidification products inside the same container.
What Is the Boveda 72% Humidity Control Pack?
The Boveda 72% RH Size 320 is a large, rectangular humidity control pack that manages moisture in both directions. When the air inside your closed storage container is too dry, the pack releases moisture. When humidity rises, it absorbs moisture. This approach is designed to reduce the swings that can dry out cigar wrappers or leave tobacco overly damp.
This listing is for one Size 320 pack, model B72-320-OWB. The Size 320 is much larger than Boveda’s common Size 60 format and is intended to cover a larger storage load. Amazon’s listing states that one Size 320 is equivalent to five Size 60 packs and recommends one Size 320 for every 100 total items the container can hold.
Why Choose the Boveda 72% Humidity Control Pack?
The main reason to choose this version is the 72% RH target combined with Size 320 capacity. Boveda positions 72% RH for dry environments, drafty humidors, and cigar owners who prefer a higher moisture profile. That makes it more specialized than 69% RH, which Boveda identifies as the more universal choice for cigar storage.
The second advantage is convenience. You do not add distilled water, refill a sponge, or top off gel. Once the clear outer wrap is removed, the intact brown humidity pack goes into the humidor and works without an external power source.
Before You Buy: Do not choose 72% RH just because a higher number sounds better. Boveda recommends 69% RH for general cigar storage, while 72% RH is better suited to dry conditions, drafty humidors, or buyers who deliberately want a higher-moisture profile. For seasoning an empty wood humidor, Boveda uses a separate 84% RH seasoning solution.
Key Benefits of the Size 320 Pack
Two-Way Moisture Control
The pack can both add and remove moisture, so you are not relying on a one-direction humidifier. That matters in a wood humidor because room conditions, lid openings, and the humidor’s seal can change the moisture load over time. Boveda states that its packs are designed to maintain the printed RH within about plus or minus 2% when the recommended amount is used in a suitably closed environment.
Large Size 320 Capacity
This is a 320 g pack, and the Amazon listing rates it for up to 5 lb (2.5 kg) of stored contents. It is also described as the equivalent of five Size 60 packs. For a larger wood box or cabinet, one larger pack can be simpler to place and monitor than several smaller pouches.
No Refilling or Recharging
You use the pack as a disposable humidity-control component. There is no water reservoir to fill and no sponge to wet. Boveda specifically advises against recharging or rehydrating spent packs because doing so can reduce humidity precision and introduce unwanted contaminants.
Simple Replacement Cue
You do not need to guess by calendar alone. The Amazon listing tells you to replace the pack when it becomes hard and crunchy. Boveda’s current cigar guidance puts typical life in a wood humidor at roughly two to four months, although lifespan changes with the seal, ambient climate, container size, and how often you open the lid.
Materials and Safety
Boveda describes the internal formula as salts and water sealed inside a leak-resistant membrane. The Amazon product information also states that the pack is FDA compliant and food safe. That does not mean 72% RH is automatically the correct storage humidity for every food, herb, or other product, so match the RH level to what you are actually storing.
Do not cut or tear open the brown humidity packet. If your pack arrives in a clear plastic overwrap, remove that outer plastic before use. Keep the inner humidity packet intact while it is inside the container.
How It Performs in Real Use
In a Drafty Wood Humidor
This is the use case where 72% RH makes the most sense. A wood humidor that loses moisture faster than an airtight container can pull the actual internal RH lower than the number printed on the pack. Starting with B72 gives the system more headroom to compensate for those losses, although a severely leaking humidor may still need attention to its seal.
In a Dry Climate
Dry room air can increase the moisture demand every time you open the lid. The Size 320 gives you a larger humidity-control reservoir than a single Size 60 pack, which can make it a practical choice for a larger box in a consistently dry environment. You should still check a reliable hygrometer rather than assuming every humidor will settle at exactly 72%.
For Long-Term Cigar Storage
For many long-term cigar setups, Boveda’s 69% RH option is the more universal starting point. Choose the 72% version when your environment or humidor tends to run dry, or when you intentionally prefer a higher moisture profile. If your cigars feel overly soft, burn poorly, or your hygrometer stays too high, reassess the RH level instead of adding more packs blindly.
For Transport or Temporary Storage
The pack can also manage humidity during transport or collection storage when used inside an appropriate closed container. The large Size 320 format, however, takes more space than smaller Boveda packs, so compact travel cases may be better matched to a smaller pack size.
How to Use and Maintain Boveda 72% Packs
- Remove only the clear outer wrap. Do not open the brown humidity packet itself.
- Place the pack inside the closed humidor or storage container. The Size 320 can sit inside the box, or you can use a compatible Boveda Mounting Plate sold separately if you want to secure it to a lid, shelf, or side.
- Use one RH level in the container. Do not mix 72% with 65%, 69%, 75%, or 84% packs.
- Do not combine it with sponges, gels, beads, or other humidification products. Competing humidity sources can reduce efficiency.
- Watch the pack’s texture. Replace it when it becomes hard and crunchy rather than trying to refill or rehydrate it.
- Check your hygrometer. Humidor seal quality and room climate can affect the RH you actually see.
Pro Tip: If your wood humidor consistently reads well below your target even with the correct number of packs, check the lid seal and make sure the humidor was properly seasoned. Adding more humidity control cannot fully compensate for a box that loses moisture too quickly.
Who Should Buy It?
Best For
- You use a wood or glass-top humidor that tends to lose humidity.
- You live in a dry climate and specifically need a 72% RH cigar-storage target.
- You want one large Size 320 pack instead of managing several smaller humidity packs.
Skip If
- Your airtight humidor already holds a stable lower RH and you prefer a drier cigar profile.
- You need to season a new or empty wood humidor, which calls for a dedicated seasoning solution.
- Your travel case is too small to comfortably fit the large Size 320 format.
Pros and Cons
Pros
- Two-way system both releases and absorbs moisture.
- Large 320 g Size 320 format for higher-capacity storage.
- No water refills, gel top-offs, batteries, or external power.
- Clear physical replacement cue when the pack becomes hard and crunchy.
- Made with salts and water sealed inside an intact membrane.
Cons
- 72% RH is not the universal choice for every cigar humidor.
- The Size 320 body takes more room than smaller humidity packs.
- It is disposable and should be replaced rather than rehydrated.
Is It Worth the Price?
The Size 320 makes the most sense when you value convenience and need a larger-capacity 72% RH solution. Instead of maintaining a refillable humidifier or arranging several small packs, you get one large disposable pack with no ongoing water maintenance.
Its value depends on matching the product to your setup. It is worth considering for a dry room, a drafty wood humidor, or a larger container where 72% RH is the intended target. It is not the best fit if your storage already holds steady around a lower RH or if a smaller Size 60 pack would adequately cover your container.
How It Compares to Alternatives
Within Boveda’s cigar range, 69% RH is the more universal option for general cigar storage, while 65% RH suits buyers who prefer a drier cigar profile. The 72% RH pack is the specialty choice for dry environments, drafty humidors, or a deliberately higher moisture profile.
For a new or empty wood humidor that needs seasoning, Boveda’s 84% RH seasoning solution serves a different job. You should not mix 84% seasoning packs with 72% storage packs in the same occupied humidor.
Frequently Asked Questions
Is this listing for a Size 60 or Size 320 pack?
This ASIN is for one Size 320 pack with a 320 g capacity. Amazon lists model B72-320-OWB and describes one Size 320 as equivalent to five Size 60 packs.
Is 72% RH right for every cigar humidor?
No. Boveda positions 69% RH as the more universal cigar-storage level. The 72% version is better matched to dry environments, drafty humidors, or buyers who intentionally prefer a higher moisture profile.
How long does the Boveda 72% Size 320 last?
Boveda’s current cigar guidance says packs commonly last about two to four months in a wood humidor. Your actual lifespan depends on container seal, ambient climate, container size, and how often you open it. Replace the pack when it becomes hard and crunchy.
Can I recharge a hard Boveda pack?
No. Boveda advises against rehydrating or recharging used packs because it can reduce their humidity-control precision and may introduce contaminants. Replace a spent pack with a fresh one.
Can I mix 72% with 69% or another Boveda RH?
No. Use one RH level inside a single humidor or container. Boveda also advises against using its packs alongside gels, beads, sponges, or other humidification products because the systems can work against one another.
Do I open the brown Boveda packet?
No. Remove the clear plastic overwrap if your pack has one, but keep the brown humidity packet sealed. Place the intact pack inside your closed storage container.
Can I use this 72% pack to season a new wood humidor?
For seasoning an empty wood cigar humidor, Boveda recommends its dedicated 84% RH seasoning solution. After seasoning is complete and cigars are added, switch to the storage RH level that matches your humidor and preference.
Is the Boveda pack safe to touch stored items?
Amazon’s product information says the internal salts and water are sealed in a leak-resistant membrane and describes the product as FDA compliant and food safe. Keep the brown packet intact and follow the product instructions for the item you are storing.
The Bottom Line
The Boveda 72% Humidity Control Pack, Size 320 is a practical choice when you need a large, no-refill two-way humidity pack for a dry environment or a humidor that tends to lose moisture. Skip it if your airtight setup already holds a lower RH well, you prefer a drier cigar profile, or you actually need an 84% seasoning pack rather than a 72% storage pack.
Its biggest strengths are capacity, simple maintenance, and automatic two-way moisture control. Its main limitation is also the reason to buy carefully: 72% RH is a targeted choice, not the default for every humidor.
