Mellanni Extra Deep Split King Sheets - Ultra Soft, Cooling Set

In this review of the Mellanni Extra Deep Split King Sheets the bottom line is clear: these are an excellent choice for shoppers who want lightweight, ultra-soft bedding that is easy to care for and holds up to frequent washing. The set is most appealing to people with deep mattresses or memory foam toppers who need two fitted sheets for a split king layout. Its standout quality is the airy, temperature-regulating double-brushed microfiber that feels soft against the skin while remaining remarkably durable and quick-drying.

Key Features

• Lightweight construction: The thin, breathable fabric improves airflow and helps wick moisture for comfortable sleep in warm and cool seasons.
• Complete split king set: Two fitted sheets, one large flat sheet and two pillowcases provide a full bed solution for split king mattresses without extra shopping.
• Deep pockets and secure fit: The fitted sheets are designed to fit mattresses up to 21in deep and include a sewn-in elastic band to hold corners in place.
• Durability beyond cotton: Double-brushed microfiber resists stains, tears, and wear from frequent washing, so the sheets keep their look over time.
• Easy care: Machine wash cold and tumble dry low for fast drying and minimal maintenance, ideal for busy households with kids or pets.
• Safety certification: OEKO-TEX STANDARD 100 testing gives peace of mind by screening for harmful substances.

Who It's For

These sheets are best for sleepers with split king beds or those who use deep memory foam toppers and want a snug, secure fit; the 21in pocket depth and twin fitted sheets solve the common problem of fitting two mattresses together. They also suit buyers who prioritize a very soft, lightweight feel and need low-maintenance bedding that dries quickly after washing.

Shoppers who prefer thick, plush percale or heavyweight cotton may want to look elsewhere, because multiple customers describe the fabric as thin rather than heavy. If you need heavy thermal insulation from bedding for cold climates, consider a heavier weave or layering with a duvet.

Pros & Cons

Pros

• Very soft, double-brushed microfiber that feels luxurious against the skin.
• Designed for deep mattresses up to 21in with two fitted sheets for split king convenience.
• Resists fading, shrinking, wrinkling, and pilling for lasting appearance and easy care.
• Quick-drying and moisture-wicking, helping temperature regulation year-round.

Cons

• Fabric is on the thinner side, which some buyers note reduces perceived heft compared with heavier cotton sheets.

Specifications

Set contents	2 fitted sheets 39in x 80in x 21in, 1 flat sheet 108in x 102in, 2 pillowcases 20in x 40in
Material	Double-brushed microfiber
Pocket depth	Fits up to 21in deep mattresses
Care	Machine wash cold, tumble dry low
Performance claims	Wrinkle, fade, stain, shrink and pill resistant
Certification	OEKO-TEX STANDARD 100

Our Verdict

For anyone with a split king bed or deep mattress who wants soft, low-maintenance bedding, these sheets offer strong value. They deliver cooling, quick-dry comfort and durable performance in everyday use, though the lightweight, thin feel may not satisfy buyers seeking a heavy, substantial sheet weight. Overall they are a practical, cost-effective choice for busy homes.

Frequently Asked Questions

Do these sheets fit deep mattresses?
Yes, the fitted sheets are made for mattresses up to 21in deep and include sewn-in elastic for a secure fit.

How do they handle washing and drying?
The sheets are machine washable in cold water and tumble dry low; they are quick-drying and tested to resist fading, shrinking, wrinkling and pilling.

Are the sheets heavy or lightweight?
The fabric is intentionally lightweight and breathable, offering year-round temperature regulation, though some customers describe the sheets as thinner than heavier cotton options.