Best in 7 days
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Description
Más allá de la razón áureaQu se entiende por constante matemtica? Hay muchos nmeros que se ganan el apelativo de constante matemtica por aparecer en muchos lugares o por la importancia que tienen, de modo natural, en el desarrollo de las matemticas. Otras constantes son nmeros singulares que se utilizan en alguna prueba. Y an existen otras que provienen de la Fsica, como la constante de gravitacin universal, la constante de Planck o la constante cosmolgica. De todas ellas
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 1205 reviews
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Product Reviews
★★★★★ 5
Very cool
Color: 01 - White, Size: Queen (20" x 30")
This pillowcase is awesome. It stays cool if you get warm you turn it over. It’s cold on the other side. It’s silky but not slippery. Highly recommend these their
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Good quality pillowcase for cooling and Skin Care during sleep
Color: 02 - Beige, Size: Queen (20" x 30")
I bought this pillow case specifically for cooling while sleeping during the summer. It works pretty well and also replaces my satin pillowcase used to keep my skin in hair intact. I can recommend this pillowcase if you're looking for cooling and sleekness during sleep.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Very slippery
Color: 01 - White, Size: Queen (20" x 30")
UPDATE: the sellers saw my poor review, reached out immediately, and made things right. Excellent customer service!
I hate this thing. It’s sort of slimy and the pillow case slides all around over your pillow. Would not buy again.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
It helps with hot flashes
Color: 01 - White, Size: Queen (20" x 30")
Very nice! Stays nice and cool and provides relief when you’re having a hot flash. Washes up nicely.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Great pillowcase
Color: 03 - Grey, Size: King (20" x 36")
Great quality, very soft!
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Reviewed in the United States on June 1, 2026
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