The ExceptionalSheets Premium Deep Pocket Fitted Sheet wins overall for its deep pockets, strong elastic, and OEKO-TEX certification. For a budget pick, the Mellanni 39×75 Fitted Sheet offers great value with solid owner reviews.
Finding the perfect 39 x 75 fitted sheet can be a challenge, especially for RV, crib, or custom mattresses. Our research team compared specs, certifications, and aggregated owner reviews to rank the best options for fit, comfort, and durability.
We focused on key criteria such as material quality, thread count, pocket depth, and certifications like OEKO-TEX and CertiPUR-US. Owner-reported experiences with fit, softness, and washing durability shaped our final rankings.

This fitted sheet features a 1800 thread count microfiber construction with reinforced elastic that grips securely. Owners report it stays put through restless sleep and multiple washes. The OEKO-TEX certification ensures it's free of harmful substances.
Check current priceWe do not take payment for placement and we do not physically test products. Rankings come from manufacturer specifications, material certifications (CertiPUR-US foam, OEKO-TEX textiles), and the weight of aggregated verified owner reviews, analyzed for durability, heat retention and sagging. The scores in this guide are MattressVetted editorial research ratings — our assessment of the available evidence, not customer star averages. See how we rate.
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Deep mattresses up to 18" · Type: Microfiber | Firmness: Medium | Trial: 30 days
This fitted sheet features a 1800 thread count microfiber construction with reinforced elastic that grips securely. Owners report it stays put through restless sleep and multiple washes. The OEKO-TEX certification ensures it's free of harmful substances.
What owners report: Owners consistently praise the perfect stretch fit and deep pockets, with many noting it doesn't pop off corners. Some mention slight pilling after several washes, but overall satisfaction remains high.
Budget-conscious buyers · Type: Microfiber | Firmness: Medium | Trial: 30 days
This budget-friendly sheet offers a 200 thread count microfiber with a soft brushed finish. It fits standard 8-12 inch mattresses and comes in over 30 colors. Owners report it's very soft out of the package and holds up well.
What owners report: Owners love the affordable price and soft feel, often buying multiple sets. A few report the elastic loosens over time, but most find it a great value.
Hot sleepers · Type: Cotton percale | Firmness: Medium | Trial: 30 days
Made from 100% long-staple cotton with a 400 thread count percale weave, this sheet is crisp and breathable. It has a 15-inch pocket and is OEKO-TEX certified. Owners say it sleeps cool and gets softer with washing.
What owners report: Owners highlight the crisp, cool feel and durability after many washes. Some note the pockets are snug on thicker mattresses.
Side sleepers needing stretch · Type: Jersey knit | Firmness: Medium | Trial: 30 days
This sheet is made from a 4-way stretch knit fabric with a 22-inch pocket depth, ideal for pillow-top mattresses. It has a soft, jersey-like feel that conforms to the body. Owners report no slipping or bunching.
What owners report: Owners rave about the stretch fit and softness, especially for deep mattresses. A few mention it pills slightly after several washes.

Tight budget · Type: Microfiber | Firmness: Medium | Trial: 30 days
This ultra-affordable microfiber sheet has a 1800 thread count and fits up to 14-inch mattresses. It is wrinkle-resistant and machine washable. Owners say it's a solid basic sheet at an unbeatable price.
What owners report: Owners appreciate the low price and good fit for standard mattresses. Some report the fabric feels thin and not as soft as pricier options.
Those who prefer a crisp, firm feel · Type: Cotton sateen | Firmness: Firm | Trial: 30 days
This cotton sateen sheet has a 300 thread count and a subtle sheen. It fits mattresses up to 16 inches and is OEKO-TEX certified. Owners describe it as cool, crisp, and well-constructed.
What owners report: Owners love the crisp feel and quality stitching. A few say it's not as soft as brushed microfiber, but durability is praised.

Eco-conscious buyers · Type: TENCEL/cotton blend | Firmness: Medium | Trial: 30 days
Made from a TENCEL Lyocell and organic cotton blend, this sheet is sustainable and breathable. It has a 15-inch pocket and is both OEKO-TEX and GOTS certified. Owners report it's incredibly soft and temperature-regulating.
What owners report: Owners praise the eco-friendly materials and softness. Some note the sheet is pricey but worth it for the quality and certification.
A 39×75 fitted sheet is typically used for RV mattresses, crib mattresses, or custom-size beds. It's also common in some daybeds and antique frames. Always measure your mattress before purchasing.
Standard pockets are 7-12 inches deep. If your mattress is thicker (e.g., pillow-top), look for deep pockets (14-18 inches). Measure your mattress height and add an inch for a secure fit.
Cotton is breathable and durable, with percale being crisp and sateen soft. Microfiber is budget-friendly and wrinkle-resistant. For cooling, choose cotton or TENCEL; for stretch, jersey knit works well.
Check the pocket depth matches your mattress height. Look for sheets with reinforced elastic corners and a continuous elastic band for the best grip. Owner reviews often note if a brand runs snug or loose.
Yes, most are machine washable. Use cold water and tumble dry low. Avoid fabric softener as it can reduce absorbency. Always check the care label for specific instructions.
For most, the ExceptionalSheets Premium Deep Pocket Fitted Sheet is the top choice due to its secure fit and OEKO-TEX certification. If you're on a budget, the Mellanni 39×75 Fitted Sheet delivers softness and value. For eco-conscious buyers, the Double Stitch Hybrid is worth the investment.