Best 18 Inch Fitted Sheets for Deep Mattresses and Tall Beds

Finding a fitted sheet that truly hugs a tall mattress can be a challenge. The following picks combine extra-deep pockets, durable materials, and consistent sizing to help prevent slipping night after night. This guide highlights five top options, including two Hearth & Harbor sets and three CGK Unlimited and Elegant Comfort models, all designed to fit mattresses 18 to 24 inches deep. Read on to compare features and choose the best 18 inch fitted sheets for your bed.

Product Brand Depth Fit Material Note
Hearth & Harbor Extra Deep Pocket Queen Sheets Sets – Grey Hearth & Harbor 18-24 in Microfiber 6-pieces; includes extra deep pocket fitted sheet
Hearth & Harbor Extra Deep Pocket Queen Sheets Sets – White Hearth & Harbor 18-24 in Microfiber 6-pieces; white option
Extra Deep Queen Fitted Sheet – Dark Grey CGK Unlimited 18-24 in Double brushed microfiber Queen single fitted sheet option
Extra Deep Queen Fitted Sheet – White CGK Unlimited 18-24 in Double brushed microfiber Queen single fitted sheet option
Elegant Comfort Premium Hotel Quality 18-24 Inches Deep – King White Elegant Comfort 18-24 in Microfiber 4-piece sheet set; deep pocket

Hearth & Harbor Extra Deep Pocket Queen Grey

Hearth & Harbor Extra Deep Pocket Queen Grey

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Queen size set includes 1 extra deep pocket fitted sheet, 1 flat sheet, and 4 pillowcases. The deep pocket fitted sheet measures 60 inches by 80 inches to fit mattresses 18–24 inches deep. The flat sheet measures 90 by 102 inches, and pillowcases are 20 by 30 inches. Made from hotel-quality microfiber, the fabric is double brushed on both sides for softness and comfort. The deep pocket design accommodates unusually tall beds, memory foam toppers, and large mattresses, ensuring a snug fit without slipping.

Hearth & Harbor Extra Deep Pocket Queen White

Hearth & Harbor Extra Deep Pocket Queen White

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Queen size set includes 1 extra deep pocket fitted sheet, 1 flat sheet and 4 pillowcases. The deep pocket sheet fits mattresses 18–24 inches deep and the flat sheet is sized at 90 by 102 inches. Pillowcases measure 20 by 30 inches. The microfiber fabric is double brushed on both sides, delivering a soft, luxe feel. The fitted sheet features elastic all around to secure the mattress and prevent bunching, making it a practical option for deep mattresses and toppers.

Extra Deep Queen Fitted Sheet – Dark Grey

CGK Unlimited Extra Deep Queen Fitted Sheet Dark Grey

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Dark grey queen fitted sheet designed to fit mattresses 18–24 inches deep with extra deep pockets. It features elastic around the entire edge to hug the mattress securely, minimizing sheet balls and shifts during sleep. Made from double brushed microfiber for durability and softness, this sheet is treated to resist tearing, shrinking, wrinkling, staining, and fading. The fabric maintains softness with repeated washings, making it a long-lasting option for deep-pocket beds.

Extra Deep Queen Fitted Sheet – White

CGK Unlimited Extra Deep Queen White

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The white queen fitted sheet is engineered for mattresses 18–24 inches deep, with all-around elastic to keep the sheet in place. The deep pocket is paired with a premium, double brushed fabric that resists tears and wrinkles. The sheet is machine washable, designed to withstand regular washing without losing softness. This option emphasizes practical durability and a clean, bright appearance for deep-pocket beds.

Extra Deep King White

CGK Unlimited Extra Deep King White

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King size option with six-piece bedding set includes a deep pocket fitted sheet, a flat sheet, and four pillowcases. The deep pocket fits mattresses 18–24 inches deep, making it suitable for high-profile king mattresses and toppers. Made from high-quality microfiber that is double brushed for a soft, breathable feel, this sheet set stays comfortable through regular use and washing cycles, avoiding common issues like tearing or fading.

Elegant Comfort Premium 18-24 Inches Deep King White

Elegant Comfort Premium 18-24 Inches Deep King White

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King size set emphasizes a snug, secure fit with extra deep pockets designed for mattresses up to 24 inches thick. The fitted sheet is fully elasticized, with pocket hemlines to ensure a stay-put fit. The 4-piece or 6-piece configuration varies by listing, but all include a fitted sheet with a deep pocket, a flat sheet, and pillowcases. The fabric is a soft, breathable microfiber that remains comfortable after multiple wash cycles, maintaining a hotel-like feel.

Elegant Comfort Luxury 1500 Premium White 18-24 Inches Deep King

Elegant Comfort Luxury 1500 Premium White 18-24 Deep King

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4-piece sheet set designed for mattresses up to 24 inches deep, featuring a fully elasticized fitted sheet and extra-deep pocket. The yarns are selected for luxury and durability, with brushing and conditioning processes that yield a smooth, comfortable finish. This option blends hotel-quality feel with everyday practicality and an aesthetic white finish that complements modern bedroom decors.

Buying Guide: Key Purchase Considerations

  • Bed depth compatibility: Verify the mattress depth range (most options here fit 18–24 inches) to ensure a secure, stay-put fit.
  • Fitted sheet construction: Look for all-around elastic and extra-deep pockets for reliable edge-to-edge coverage and to prevent slipping.
  • Material and finish: Microfiber and double-brushed fabrics offer softness, durability, and wrinkle resistance; they’re typically easy to care for and machine washable.
  • Sheet set contents: Some listings are 6-piece (fitted sheet, flat sheet, and pillowcases), while others are 4-piece or single fitted sheets. Choose based on your bedding needs.
  • Care and longevity: Consider resistance to tearing, shrinking, fading, and wrinkling. Machine washability and color retention are practical advantages for deep-pocket sheets.
  • Color and style: Neutral colors like white, grey, and black coordinate with most bedding sets and can simplify matching with existing decor.
  • Size variations: While the focus is on 18–24 inch depth, confirm width and length to fit your bed type (Queen vs King) and any toppers or memory foam layers you use.
  • Brand reliability: Reputable brands like Hearth & Harbor, CGK Unlimited, and Elegant Comfort typically offer consistent sizing and comfort across products.

These options provide a range of fits and finishes for deep-pocket needs. When selecting, prioritize a secure fit, soft material, and durability to ensure comfortable nights on tall mattresses.