Medium to LARGE Extension

Marsoni

M251S

$14.99

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

Medium to LARGE ExtensionExtends your Current Medium sized Coroplast Base (27" x 49. 5") to a Large Coroplast Base (27" x 56") Interior 27" x 6" with 6" walls on three sides. Includes 8 Plastic natural colored Rivets to secure sides. Optional Additional Grids and Connectors available If you need assistance with extending your cover, just reach out to us via our Contact Us Page and we can help walk you through any questions you may have!

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Your Medium to LARGE Extension orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

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Material: is very stretchy and cools well. It has a zipper which is good because the fabric is very soft and slippery and if it didn’t have a zipper the pillow would not stay in the case. Durability: zipper works great and material is easy to clean. Color: I have the gray and my daughter has the pink. Both colors as advertised. Value: Good value and I got what I expected.

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Reviewed in the United States on May 14, 2026

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Patricia Cummings

Massapequa, US

★★★★★ 4

Very soft and cool.

Color: Dark Gray, Size: Queen

Very comfortable and cooling. But after a couple of washes the stitching starts to unravel.

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Reviewed in the United States on May 3, 2026

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Aubrey Roths

New York, US

★★★★★ 5

Love them

Color: Black, Size: Standard

I LOVE THESE PILLOW CASES. I love the zipper so it stays on the pillow, how it stays cool, and the fabric. Worth it 100%

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Reviewed in the United States on June 5, 2026

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Haley

Pawtucket, US

★★★★★ 5

BUY IT!!

Color: Light Gray, Size: Standard

Love the material super soft and smooth like silk. It’s also nice and cold for when I got to bed! Definitely recommend

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Reviewed in the United States on June 3, 2026

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Gómez

Lowell, US

★★★★★ 5

Actually feels cool at night

Color: Light Gray, Size: Standard

I’ve been using these for several days now and I did notice a difference. I tend to get hot while sleeping, so I was curious if they would actually help, and they do feel cool when you lay on them. I also like that they’re soft and comfortable, not that weird texture some “cooling” products have. So far, I’ve been really happy with them.

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Reviewed in the United States on May 23, 2026