--- product_id: 50716255 title: "49% Two-Way Humidity Control Packs for Music Instruments – 4 Pack – Standard Size – Prevents Warping & Cracking for Wooden Instruments– Humidifier Packs for Instrument Cases – Resealable Bag" brand: "boveda" price: "€ 46.11" currency: EUR in_stock: true reviews_count: 5 category: "Boveda" url: https://www.desertcart.it/products/50716255-49-two-way-humidity-control-packs-for-music-instruments-4 store_origin: IT region: Italy --- # Protects wood instruments 49% RH precise control 3-month replace cycle 49% Two-Way Humidity Control Packs for Music Instruments – 4 Pack – Standard Size – Prevents Warping & Cracking for Wooden Instruments– Humidifier Packs for Instrument Cases – Resealable Bag **Brand:** boveda **Price:** € 46.11 **Availability:** ✅ In Stock ## Summary > 💧 Keep your instrument’s vibe flawless—humidity mastered, sound perfected! ## Quick Answers - **What is this?** 49% Two-Way Humidity Control Packs for Music Instruments – 4 Pack – Standard Size – Prevents Warping & Cracking for Wooden Instruments– Humidifier Packs for Instrument Cases – Resealable Bag by boveda - **How much does it cost?** € 46.11 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/50716255-49-two-way-humidity-control-packs-for-music-instruments-4) ## Best For - boveda enthusiasts ## Why This Product - Trusted boveda brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Maintenance:** No daily refills—just insert & forget for 3 months - • **Fast-Acting Protection:** Stabilizes humidity within 24-48 hours for optimal sound - • **Long Shelf Life & Easy Use:** 2+ years sealed; resealable bag keeps packs fresh until use - • **Precision 2-Way Humidity Control:** Maintains ideal 45-55% RH to prevent warping & cracking - • **Universal Instrument Compatibility:** Perfect for guitars, woodwinds, bowed instruments & more ## Overview Boveda 49% Two-Way Humidity Control Packs offer patented, saltwater-based humidity regulation that protects wooden musical instruments from damage caused by humidity fluctuations. Designed for acoustic and electric guitars, woodwinds, and bowed instruments, these packs maintain a stable 45-55% relative humidity inside cases, preventing warping and cracking. Each pack lasts up to 3 months, requires no daily maintenance, and activates within 24-48 hours, ensuring your investment sounds and looks its best. ## Description Product Description Keep your instruments in pristine condition with the Boveda 2-Way Humidity Control 4-Pack Refill. This large kit is ideal for acoustic guitar, cello, double bass, bassoon, clarinet, etc., and preserves the look and tone of your instruments by maintaining a relative humidity of 40%–50%. With a 2+ year shelf life in original packaging, the Boveda 2-Way Humidity Control 4-Pack Refill is an essential accessory for any musician. Directions Remove your Boveda from its airtight cellophane wrapper or resealable bag and place in your favorite humidor or humidity controlled container. When your Boveda is dry and crisp, it's time to replace. The more Boveda you use, the longer they last. The more you expose your Boveda to air, the harder it has to work. It's that easy! Review: With guitars be careful with placement and confinement. - I've been using these for at least 15 years, one inside the guitar (16 archtops) and one in the case. During that time only 3 packs have ‘leaked’, showing damp patches. But there have been two other situations. The first when a pack was resting against a tuner, for about a month or two, it took the finish off down to the base metal, unfortunately a gold Kluson on a Gibson Citation, try and find a replacement. The second was with a guitar shipped to the UK from California with me to follow in 3 months, which actually turned out to be 15 months. The guitars tuners were badly tarnished, Gold Klusons on a Gibson Super V Prototype. I still use Boveda packs but am now more aware of their drawbacks. Don't place a pack directly against metal parts, and be sure to open the case occasionally, to release any fumes that may accumulate if a guitar is stored for an extended period. You can also drop one inside a guitar, as I do, but be sure you have a way to get it out. Best of all control the humidify of your room, though with the English climate it’s easier said than done. But In this way you can probably get along without using any of these expensive packs. Review: Does not work - It doesn’t work. I’ve left it in the guitar case for a week and monitored it for a few hours via the app, but the humidity didn’t drop to 49%. It was still at around 60%. Maybe it does not work or it takes a long time to start working ## Features - HOW BOVEDA WORKS FOR MUSICAL INSTRUMENTS: Boveda 49% RH protects wood instruments & their accessories by stabilizing the humidity within the ideal range—45–55% RH. If the air inside a case is too moist, Boveda absorbs that moisture. If it's too dry, Boveda releases small amounts of water vapor into the case. Wide humidity fluctuations will cause the wood to expand or shrink, which puts stress on the instrument & degrades its performance abilities. - CHOOSE BOVEDA: Boveda's the only patented 2-way humidity control solution with 25 years of experience. Using saltwater in our humidity packs, we provide the fastest, most precise humidity control in the market for wood instruments. When you invest in an instrument, you want to ensure you take care of it to produce optimal sound. Boveda is the only humidity solution that can do so within 24-48 hours. - HOW TO USE: Always insert Boveda packs into a protective Boveda Fabric Holder before using in an instrument case. Boveda Fabric Holders are available separately & in Boveda Starter Kits. Remove a pack from the resealable bag. DO NOT cut or open the brown humidity packet. Slip the packet(s) into the holder(s). Place in case and close the lid. BOVEDA DOES THE REST. Replace every 3 months. You'll know it's time to swap out Boveda when it becomes hard & crunchy. NEVER MIX the 49% with any other %RH. - WHO IS BOVEDA FOR: Boveda 49% RH is for acoustic & electric GUITAR players & musicians who play WOODWINDS & BOWED INSTRUMENTS. Professional musicians, band & orchestra leaders, instrument techs, music teachers, hobbyists & student musicians use Boveda packs for easy & precise humidity management for instrument storage. NO DAILY MAINTENANCE! Don’t risk damaging an instrument by adding water to sponges and snakes & forgetting to refill them. WHY RISK A WARPED OR CRACKED INSTRUMENT? ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Boveda | | Model Number | B49-70-4P | | Colour | Boveda Brown | | Product Dimensions | 17.78 x 16.51 x 2.54 cm; 136.08 g | | Volume Capacity | 70 g | | Special Features | Two-Way Humidity Control | Keeps Instrument From Cracking/Warping | Long Term & Short Term Storage | Replace Every 3 Months | Pair with the Boveda Fabric Holder for Best Results | Made For Fretted, Bowed, & Woodwind Instruments | Guitars, Ukulele, Violin, Viola, Clarinet, Any instrument With Soundhole | | Item Weight | 136 g | ## Product Details - **Brand:** Boveda - **Special feature:** Two-Way Humidity Control | Keeps Instrument From Cracking/Warping | Long Term & Short Term Storage | Replace Every 3 Months | Pair with the Boveda Fabric Holder for Best Results | Made For Fretted, Bowed, & Woodwind Instruments | Guitars, Ukulele, Violin, Viola, Clarinet, Any instrument With Soundhole - **Colour:** Boveda Brown - **Filter type:** Wick - **Operation mode:** Manual ## Images ![49% Two-Way Humidity Control Packs for Music Instruments – 4 Pack – Standard Size – Prevents Warping & Cracking for Wooden Instruments– Humidifier Packs for Instrument Cases – Resealable Bag - Image 1](https://m.media-amazon.com/images/I/71ygQ9EiC1S.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Do I have to use a fabric holder with Boveda in an instrument case?** A: YES! Always insert Boveda into a Boveda Fabric Holder before placing it in an instrument case. The fabric holder extends the life of Boveda plus acts as a liquid barrier if a pack is accidentally punctured. **Q: Do I tear open the brown Boveda packet?** A: NO!!! DO NOT OPEN the brown packet itself. If your Boveda arrived individually wrapped in cellophane, remove that plastic overwrap before slipping the humidity control pack into a fabric holder. **Q: Should I use a sponge or snake with Boveda?** A: No, do not use Boveda in the same instrument case with other humidification products, as this will reduce the Boveda’s efficiency. Ditch the sponges and hoses. No more rewetting— Boveda works automatically to balance the humidity in your case! **Q: I live in a really humid place, so do I need Boveda in my instrument case?** A: Yes! Boveda makes a High-Absorbency pack to protect wood instruments in extreme humidity, prevent warping and curb humidity fluctuations when you’re in a dry environment, like an airplane or air-conditioned venue. **Q: What’s the difference between the Large and Small Starter Kits?** A: The Large Starter Kit is the right Boveda for an acoustic guitar, large woodwind or large bowed or fretted instrument. Choose a Small Starter Kit to use Boveda with an electric guitar or bass, small woodwind or small bowed or fretted instrument. ## Customer Reviews ### ⭐⭐⭐⭐ With guitars be careful with placement and confinement. *by G***. on 12 March 2023* I've been using these for at least 15 years, one inside the guitar (16 archtops) and one in the case. During that time only 3 packs have ‘leaked’, showing damp patches. But there have been two other situations. The first when a pack was resting against a tuner, for about a month or two, it took the finish off down to the base metal, unfortunately a gold Kluson on a Gibson Citation, try and find a replacement. The second was with a guitar shipped to the UK from California with me to follow in 3 months, which actually turned out to be 15 months. The guitars tuners were badly tarnished, Gold Klusons on a Gibson Super V Prototype. I still use Boveda packs but am now more aware of their drawbacks. Don't place a pack directly against metal parts, and be sure to open the case occasionally, to release any fumes that may accumulate if a guitar is stored for an extended period. You can also drop one inside a guitar, as I do, but be sure you have a way to get it out. Best of all control the humidify of your room, though with the English climate it’s easier said than done. But In this way you can probably get along without using any of these expensive packs. ### ⭐ Does not work *by S***I on 8 October 2025* It doesn’t work. I’ve left it in the guitar case for a week and monitored it for a few hours via the app, but the humidity didn’t drop to 49%. It was still at around 60%. Maybe it does not work or it takes a long time to start working ### ⭐⭐ Ok but not the desired or advertised affect *by J***H on 18 August 2017* Slightly dissapointing compared to similar products I have used. Used to maintain humidity in instrument cases for fine wooden instruments. The cases are sealed fibreglass cases and although it seemed to maintain a constant of 57% it is not the ideal humidity for the instrument and is not the humidity advertised by the product. Other than that nice design good packaging etc, in future I would look to try other alternatives ## Frequently Bought Together - Boveda 49% Two-Way Humidity Control Packs for Music Instruments – 4 Pack – Standard Size – Prevents Warping & Cracking for Wooden Instruments– Humidifier Packs for Instrument Cases – Resealable Bag - Boveda Music Large Starter Kit - (3) 49% RH Standard Boveda - Ideal Two-Way Humidty Control for MOST CLIMATES - For Guitars & Other Large Wooden Instruments - Boveda for Music | Single Fabric Holder for 49% RH Boveda 2-Way Humidity Control | For Use with 1 Boveda Size 70 to Protect Smaller Wooden Instruments from Cracking and Warping --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/50716255-49-two-way-humidity-control-packs-for-music-instruments-4](https://www.desertcart.it/products/50716255-49-two-way-humidity-control-packs-for-music-instruments-4) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-04-24*