Massive HIPPOXL64 6" 300 Watts RMS Dual 4 Ohm Subwoofer

Marsoni

M251S

$129.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Massive HIPPOXL64 6" 300 Watts RMS Dual 4 Ohm SubwooferOverview The impressive HippoXL64. Not just your average 8 subwoofer, but one of power and precision in a compact package. At the heart of HippoXL64 is a stout 2 coil that can take plenty of heat and power from the most demanding installs. The voice coil is wrapped on an anodized aluminum former, for strength and weight savings. We even added kevlar spunlace for additional durability under extended use. Rated for a real 300 watts of clean power. We

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Bought 6 of these because I believed the reviews and the product description.. I don’t think these are bamboo because they don’t stay cool. The appearance of them are great.. but that’s the only good quality and I can’t return them because I got rid of the boxes they came in. Won’t be buying anything else from this company

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Reviewed in the United States on May 10, 2026

Verified Purchase

Nicole Hoelting

Chelsea, US

★★★★★ 5

Finally sleeping through the night without waking up drenched

I was dealing with night sweats almost every night. Waking up overheated, flipping my pillow over constantly, just uncomfortable and restless. It was starting to mess with my sleep in a real way. Since switching to this cooling pillowcase (and pairing it with a cooling blanket), it’s been a completely different experience. I’m actually staying cool through the night and not waking up soaked or irritated. The fabric feels cool to the touch right away and doesn’t trap heat like a regular pillowcase. It’s smooth, comfortable, and still feels good after washing. Not stiff or weird like some “cooling” materials can be. Is it magic? No. But does it noticeably reduce overheating and help you sleep better? Absolutely. If you run hot at night or deal with night sweats, this is one of those small upgrades that makes a big difference. I wish I had bought it sooner.

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Reviewed in the United States on March 19, 2026

Verified Purchase

Amazing Sally

Chelsea, US

★★★★★ 5

so far so good

I was surprised at this pair of pillow cases only because the material seemed impossible to be cooling - it's that weird polyester blend. So far I have not awoken feeling sweaty around my face and scalp. I don't recall what I originally paid but I think it is great value for money! If you are sensitive to out of the box smell, I washed mine first and it didn't impede on the efficacy of the cooling!

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Reviewed in the United States on April 28, 2026

Verified Purchase

Devin Hill

Houston, US

★★★★★ 5

It’s like sleeping on a beach in San Vito lo Capo

Italian voice: I’m a big meaty fella so I put off a lot of heat ya hear. These pillow cases have changed my life. One moment they’re hot and the next you flip them and you’re blasted with a blast of ice cool what it feels like to chew 5 gum feeling capeesh. I would reccomend these pillow cases to even my grandma. If ya wanta get a rest so good that it feels like ya been sleeping with the fishes get these pillow cases, they’re the real deal. Then stop at Pauline’s joint and grab a slice of pizza say Vinnie sent ya. Anyways I gotta go my wife’s cooking up a mean lasgna and we’re gonna watch the dodgers. Let me know how these treat ya I guarantee they will change your life. Vinnie out

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Reviewed in the United States on February 15, 2026

Verified Purchase

Amazon Customer

Chelsea, US

★★★★★ 4

Soft "cooling" case.

Yes it is very cool when you lay on it. It doesn't stay cold though. Within a minute or 2 to whatever your temp is.

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Reviewed in the United States on December 25, 2025