Threadmill Supima Cotton Sheets 1000 TC Cal King Set - Hotel Softness

In this review the Threadmill Supima Cotton Sheets 1000 thread count California King set is examined for sleepers who want a hotel-like feel at home. The single biggest reason to consider this set is its authentic 100% ELS Supima cotton woven in a premium sateen that delivers a notably soft, smooth surface and a natural sheen; customers repeatedly note the fabric feels thicker and becomes softer after washing. For anyone prioritizing nightly comfort and a luxe hand, this set aims to provide long-lasting softness and dependable construction.

Key Features

• 100% ELS Supima cotton: Provides superior softness and strength compared with ordinary cotton for a plush, lasting feel.
• 1000 thread count sateen: Offers a silky surface and subtle sheen that enhances the bedroom aesthetic while remaining breathable for year-round use.
• Generous deep pocket fitted sheet: The fitted sheet fits mattresses up to 17' deep with all-around elastic to help prevent slipping and bunching.
• Four-piece California King set: Includes one flat sheet, one fitted sheet and two king pillowcases sized for larger beds and taller mattresses.
• OEKO-TEX certified and sustainable production: Manufactured in a wind and solar powered facility and free from harmful chemicals for safer home use.
• Machine washable convenience: Can be cared for in a normal wash; folding soon after drying helps reduce wrinkles and shrinkage.

Who It's For

These sheets are best for sleepers who want a lush, hotel-style feel and value premium natural fibers; the 100% Supima cotton and sateen weave suit those who like a smooth, slightly lustrous finish that softens over time. Owners of thicker mattresses will appreciate the 17' deep pocket and all-around elastic, which aim to keep the fitted sheet in place through regular use.

Shoppers who need very tight, guaranteed dimensions on every sheet should inspect fittings carefully, as customer feedback on fit is mixed; some users found the fitted sheet or flat sheet shorter than expected. If you prefer a different weave (percale) or strictly wrinkle-free, low-maintenance sheeting, a different fabric type may be a better match.

Pros & Cons

Pros

• Luxurious, velvety hand from 100% Supima cotton that becomes softer with washing.
• High 1000 thread count and sateen weave give a rich look and breathable comfort year-round.
• Deep 17' pocket and full elastic make the fitted sheet suitable for many thick mattresses.
• OEKO-TEX certification and eco-conscious manufacturing add consumer confidence.

Cons

• Some customers report mixed fit and sizing issues with the fitted or flat sheet not matching expectations.
• High thread count and sateen finish may feel warmer than percale for hot sleepers.

Specifications

Brand	Threadmill
Material	100% ELS Supima Cotton
Weave	Premium Sateen
Thread Count	1000
Set Contents	1 flat sheet, 1 fitted sheet, 2 king pillowcases
Fitted Sheet Pocket Depth	17 in deep pocket with all-around elastic
Certifications	OEKO-TEX; manufactured in wind and solar powered factory

Our Verdict

The Threadmill 1000 thread count Supima cotton California King set is a strong choice for buyers seeking a durable, hotel-style sheet with a velvety sateen finish and eco-conscious production. It represents good value for those who prioritize fabric quality and a soft hand, though buyers should verify sizing expectations if exact sheet dimensions are critical.

Frequently Asked Questions

Are these sheets suitable for hot sleepers?
Answer. The sateen weave has a smoother, denser finish which can feel slightly warmer than percale; however the Supima cotton remains breathable and suitable for many sleepers year-round.

Will the fitted sheet fit a thick mattress?
Answer. The fitted sheet is designed with a 17 in deep pocket and all-around elastic to fit most thick mattresses, but a few customers noted variation in fit so measuring your mattress is recommended.

How should these sheets be cared for?
Answer. Machine wash at room temperature and fold soon after drying to reduce wrinkles and avoid shrinkage; the fabric is made to resist pilling and fading with proper care.