LiveO2 Adaptive Contrast System with Extra Large High Altitude Chamber (Bike Not Included)

LiveO2 Adaptive Contrast System with Extra Large High Altitude Chamber (Bike Not Included)

Marsoni

M251S

$3162.49

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

LiveO2 Adaptive Contrast System with Extra Large High Altitude Chamber (Bike Not Included)LiveO2 ACX System The ACX system is designed for customers needing prolonged high altitude exposure to reach their goals. It features a larger altitude chamber compared to the legacy AC system, with a fixed altitude setting of 10,000 for simulated elevation. For altitude adjustable systems up to 20,000', check out our Extreme system. Who is the ACX for? Ideal for brainO2 training, condition resolution, and athletic performance, the ACX system offers

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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

Lowell, 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

Dallas, 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

Verified Purchase

CountryGal

Alexandria, US

★★★★★ 5

Great for hair and skin. Great buy.

These pillow cases are great for my hair and skin. They look good, hold up well in the washer and dryer, and the price is great. They are cooling. Of course I wish they could be more cooling, but honestly I'm not sure that's even possible. Great pillow cases. Already bought more for other heads. Would buy again.

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Reviewed in the United States on March 11, 2026

Verified Purchase

Melissa

Houston, US

★★★★★ 1

Hot hot hot. Side sleepers will hate it

At first touch, these are the coldest pillowcases I own … but only for seconds. Once you actually lay on them, within seconds they adjust to your body temp, the heat feels trapped, my head begins to feel hotter than before I laid down - which has in turn caused me loathe these pillow cases. I hate that I have missed the return window. Would never buy again, would never recommend. My satin ones aren’t even this hot! I gave them the good ole 30-day try. Side sleepers - if you are like me and sleep on your side with arm tucked under pillow - flipping this pillow over in hopes of a cold side - forget it, it’s already hot from your arm.

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Reviewed in the United States on August 29, 2025