Replacement Packs for Starter Kits for Fretted and Bowed Instruments and Woodwinds | Individually Overwrapped

Boveda 49% RH Standard 12-Pack Cube

Rated 5.0 out of 5 stars
4 Reviews

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The most convenient way to keep humidity pack replacements in reserve. Prevents too much or too little moisture from damaging an instrument. Protecting an instrument, Boveda lasts for months. Overwrapped, the packs are good for up to two years!

Using Boveda in an instrument case:

  • Requires zero maintenance—no more filling messy hoses and snakes and wetting sponges
  • Maintains an ideal relative humidity range for instruments—45-55% RH
  • Prevents wide fluctuations in humidity that cause the wood to expand or shrink, and degrade its performance abilities

A 12-pack refills:

  • Directional Starter Kit
  • Small Starter Kit
  • Large Starter Kit
  • Single Fabric Holder
  • Double Fabric Holder



  1. Remove Boveda's plastic wrapper. (Do not open the Boveda itself.)
  2. Just slip unwrapped Boveda into the pouch(es) of its protective fabric holder. Place in case and close the lid. Always keep your case closed when using Boveda.

Always insert Boveda into a pouch of a Boveda Fabric Holder before placing in an instrument case. The fabric holder allows Boveda to last longer and work better and acts as a liquid barrier if a packet is accidentally punctured. 


  • Mix different Boveda RH levels within the same instrument case
  •  Use Boveda in the same case with other humidification products because they will fight against each other and reduce the efficiency of Boveda

To refill a Boveda Single Fabric Holder or Directional Fabric Holder: Use one (1) or two (2) Boveda 49% RH
To refill a Boveda Double Fabric Holder: Use two (2) or four (4) Boveda 49% RH

Each Boveda in the cube is individually overwrapped. 

Boveda will last 2-6 months depending on the time of year, your climate and your case.
Unopened package: Up to two (2) years

Do the touch test. Order replacement packs BEFORE Boveda is totally rigid to avoid a lapse in humidity protection for your instrument.
Boveda is still working if you feel: 
• Hardening at its corners
• Soft spots among some hard areas
Boveda is expired if: 
• The entire pack feels rock solid all the way through. 

Achieves and maintains a constant relative humidity (RH) range between 45% and 55%.

Food-grade salt, purified water and a food-grade thickening agent sealed inside a leakproof membrane.

5.25"/13.34 cm x 3.5”/8.89 cm

5.5"/13.97 cm x 3.75"/9.525 cm x 4.5"/11.43 cm

Our Customers Say

Rated 5.0 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
4 reviews
  • JJ
    Jeff J.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    12 seconds ago
    Always The Best

    Boveda is perfect for what it provides - which is humidification solutions. I have a guitar. I live in a dry climate. Boveda delivers an effective and reasonably priced solution. They also understand how to ship correctly. Trust me on the importance of that. So…if you need humidity for your guitars, cigars, or whatever else, buy it. You won’t be disappointed.

  • KF
    Karen F.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Boveda 12-Pack Cube (49% RH Standard)

    This is my second round of Boveda 12-pack cube (49% RH Standard). I have 4 ukulele's ranging in size and value. So, Boveda is crucial to protecting their sound and stability. Boveda is just perfect because I can manage the level of humidity especially in the winter when indoor humidity can be really low given the need to heat the house in extreme cold. I have been pleased with how well Boveda works with all 4 instruments. And the service is quick and timely so I always have them when I need them.

  • JR
    Joseph R.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    6 months ago
    Standard pack

    Products are great

  • HH
    Howard H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    7 months ago
    Guitars that dry, die

    This box helps keep my guitars at the proper moisture level in my dry climate.

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