Dr. RH MRI Humidifier

$11.09 ~~$21.99~~ In stock

These Moisture Regulation Instruments are filled with crystals that absorb up to 400 times their weight in fluid! Each MRI is individually sealed with an Ultrasonic weld and the high-tech process ensures your humidifier is durable. Humidifies 50 to 250 cigars!

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 3 reviews)

Violet E. ★★★★★ Oct 23, 2026

I didn't realize how much moisture was building up in my gun safe until I popped one of these in. The crystals absorbing 400 times their weight is no joke—it's been bone dry in there for three weeks now. The airtight seal held up perfectly straight out of the package.

Elizabeth ★★★★★ Oct 22, 2026

The ultrasonic weld on these is incredibly clean, no leaks at all. I’ve been using them to stabilize humidity in my guitar case, and the crystals absorb moisture noticeably faster than the silica packs I used before.

Amelia I. ★★★★★ Oct 21, 2026

Finally got these for my music room and the ultrasonic weld really does keep them completely sealed—no mess at all. The crystals are already pulling moisture out of the air noticeably after just a few days.