Deep Pocket King Sheets King Size 21in Deep Pocket Sheet Set

Our review of the Deep Pocket King Sheets finds them best suited for sleepers with thick, high-profile mattresses who want an easy-care, soft sheet set that stays put. The standout reason to buy is the combination of a true 21in deep pocket fitted sheet and an oversized flat sheet that actually covers mattress toppers and pillow-top layers; together they solve slipping and exposure problems that come with tall beds. The set also includes two zippered pillowcases and is made from 100% ultra soft microfiber that washes and dries with minimal fuss.

Key Features

• 21in deep pocket fitted sheet: Designed to fit mattresses from about 18in up to 23in, it holds securely without popping off during the night.
• Super oversized flat sheet: Measures W 122 x L 110 so it will hang well over high-profile mattresses and cover mattress sides neatly.
• Zippered pillowcases: Hidden zipper closures keep pillows fully enclosed and the pillow case looking neat instead of using a loose flap.
• 100% ultra soft microfiber: The fabric delivers a plush, cozy feel and retains softness after repeated machine washes.
• Easy care construction: Wrinkle resistant, stain and fade resistant fabric that tumbles dry on low and needs no ironing for a hassle-free routine.

Who It's For

The set is ideal for owners of high-profile, pillow-top, or foam-topped king mattresses who need extra depth and fabric to keep sheets from coming off or exposing mattress sides. Couples who prefer a soft, low-maintenance microfiber feel and want neat pillowcases will appreciate the zippered closures and oversized top sheet.

Shoppers who prefer natural fibers like cotton or linen, or those who dislike the feel of microfiber, should look elsewhere. Also, if you need a very narrow flat sheet because you prefer minimal overhang, the super oversized flat may feel too wide for your setup.

Pros & Cons

Pros

• Deep 21in fitted sheet reliably fits and stays on high mattresses for a neat appearance.
• Oversized flat sheet provides full coverage and reduces the need to re-tuck during the night.
• Zippered pillowcases keep pillows secure and create a tidy look on the bed.
• Soft 100% microfiber that is easy to wash and resists wrinkles and fading.

Cons

• The oversized flat sheet is very generous and may be too wide for those who prefer minimal drape.
• Some customers report occasional zipper failures on pillowcases, so extra care is advised when laundering.

Specifications

Set pieces	1 fitted sheet, 1 oversized flat sheet, 2 zippered pillowcases
Fitted sheet size	King 78 x 80 + 21in deep pocket
Flat sheet size	W 122 x L 110in super oversized
Pillowcase size	20 x 40in with hidden zipper closure
Material	100% ultra soft microfiber
Care	Machine washable, tumble dry low, wrinkle resistant

Our Verdict

For anyone with a tall, pillow-top or foam mattress, these king sheets are a practical buy because the real 21in deep pocket and oversized flat sheet solve fit and coverage problems while the microfiber fabric keeps the set soft and low maintenance. They represent good value for sleepers who prioritize fit and convenience over natural fiber construction.

Frequently Asked Questions

Will the fitted sheet fit a 20in mattress?
Yes. The 21in deep pocket fitted sheet is designed to fit mattresses in the 18 to 23in range, so a 20in mattress is within its fit range.

Do the pillowcases stay closed?
The pillowcases use a hidden zipper closure for a neater finish; most users find them secure but a few have reported zipper breakage, so handle gently when washing.

Is this set easy to care for?
Yes. The microfiber material is machine washable, tumble dry low, wrinkle resistant, and does not require ironing for most users.