Experience unparalleled comfort and durability with these premium CinchFit American Made 100% Cotton Flannel Sheets proudly hand crafted in the USA. Designed with a deep 15-inch pocket depth and innovative cinching cord elastic, these sheets offer a secure, adjustable fit that conforms to a wide range of mattress sizes and shapes, including split king and split top adjustable beds.
Features
Soft & Comfy
100% Cotton Flannel
Deep 15-inch pockets accommodate thick mattresses and adjustable bed bases with ease
Unique cinching cord elastic wraps 360 degrees around the mattress, ensuring sheets stay tight and securely in place without slipping
Adjustable design allows tightening over time to maintain a perfect fit
Includes convenient cord storage pocket and directional tags for effortless setup
Our Sheets for Adjustable Beds include No-tear reinforced construction with flexible fabric in key areas prevents ripping and extends sheet life, especially suited for split top adjustable mattresses
Versatility & Fit
These sheets are designed to fit a variety of mattress sizes, including Twin XL, Queen, King, California King, and specialized split configurations common with adjustable beds. Their adaptable fit and durable materials make them an excellent choice for traditional mattresses, RV beds, boat mattresses, and more, ensuring a snug, wrinkle-free sleep surface that stays in place night after night.
Elevate your bedroom with bedding that combines American craftsmanship, luxurious softness, and innovative design to deliver the best-fitting, most comfortable sheets that truly stay on your mattress.
Twin XL: 39" x 80" Fitted Sheet, 100" x 66" Flat Sheet, (1) 20" x 30" Queen Pillowcase. Fits up to 15 Inch Mattresses and cinches to fit smaller depths. This size also fits Twin Mattresses (39" x 75")
Queen: 60" x 80" Fitted Sheet, 102" x 90" Flat Sheet, (2) 20" x 30" Queen Pillowcases. Fits up to 15 Inch Mattresses and cinches to fit smaller depths. This size also fits Full Mattresses (54" x 75").
King: 78" x 80" Fitted Sheet, 110" x 102" Flat Sheet, (2) 20" x 40" King Pillowcases. Fits up to 15 Inch Mattresses and cinches to fit smaller depths.
Cal King: 72" x 84" Fitted Sheet, 110" x 102" Flat Sheet, (2) 20" x 40" King Pillowcases. Fits up to 15 Inch Mattresses and cinches to fit smaller depths.
Split Top Queen Sheets (4PC): 1 Queen Fitted Sheet (60” x 80”) with 35" split down the center, 1 Flat Sheet (102″ x 90″), 2 Queen Pillow Covers (20″ x 30″); Universal Split Top Size fits all split lengths. Fits up to 15-inch Depth Mattresses and cinches to fit smaller splits and depths.
Split Top King Sheets (4PC): 1 King Fitted Sheet (78” x 80”) with 35" split down the center, 1 Flat Sheet (108″ x 102″), 2 King Pillow Covers (20″ x 40″); Universal Split Top Size fits all split lengths. Fits up to 15-inch Depth Mattresses and cinches to fit smaller splits and depths.
Split Top Cal King Sheets (4PC): 1 Cal King Fitted Sheet (72” x 84”) with 35" split down the center, 1 Flat Sheet (108″ x 102″), 2 King Pillow Covers (20″ x 40″); Universal Split Top Size fits all split lengths. Fits up to 15-inch Depth Mattresses and cinches to fit smaller splits and depths.
Split King Sheets (5PC): 2x Fitted Sheets (39” x 80”), 1x Flat Sheet (108″ x 102″), 2x King Pillow Covers (20″ x 40″) Fits up to 15-inch Depth Mattresses and cinches to fit smaller depths.
📦 Made to Order This item is made to order. To receive production and shipping updates, you'll need to be subscribed to our emails. Subscribe here or opt in at checkout — unsubscribed customers will not receive order status notifications.
Compare materials, feel, and finishes to find your favorite.
400 Thread Count Cotton Sateen
Material
100% natural cotton
Weave
400 thread count sateen
Yarns
Single-ply, long-staple cotton
Feel
Lightweight with a silky-soft glide
Look and qualities
Smooth with a subtle luminous sheen; soft, breathable, and durable
600 Thread Count Cotton Sateen
Material
100% natural cotton
Weave
600 thread count sateen
Feel
Smooth and soft, wash after wash
Look and qualities
Crisp with a subtle luminous sheen; soft, breathable, and durable
600 Thread Count Bamboo Viscose
Material
100% bamboo viscose
Feel
Soft
Comfort
Cooling and temperature-regulating
Qualities
Breathable and durable
650 Thread Count Cotton Blend
Material
70% cotton, 30% polyester
Feel
Comfortable cotton feel
Care
Easy care and wrinkle-resistant
Qualities
Durable and breathable
A cotton-rich sateen blend that combines a comfortable cotton feel with easy-care convenience. Polyester is added to help reduce creasing.
THE CINCHFIT DIFFERENCE
American-made. A fit you can adjust.
Durable cord elastic is sized to fit your mattress. It typically needs no tightening and can be adjusted over time if the fit loosens.
Made in America.
American-made craftsmanship.
Mattress-sized cord elastic.
Sized to fit your mattress from the start.
Adjustable over time.
Fine-tune the fit if it loosens.
Our CinchFit Sheets are American Made luxury fitted sheets featuring an innovative cinching system that keeps your sheets on all night long. Available in 400TC and 600TC 100% cotton, CinchFit is engineered for every sleep situation — from your home bedroom to boats, RVs, adjustable bases, and dorm rooms.
These flannel sheets are exceptional.
The split king sheets are incredibly soft, warm, and cozy, perfect for the recent Southern cold snaps. Unlike our old sheets that have pilled and slipped, the Cinch Fit design system secures these perfectly to our split king adjustable mattresses. Even with a minor order shipping hiccup, their customer service (Beth) was fantastic and resolved the issue immediately. **Five stars for quality and exemplary support.**
The sheets are very comfortable and made well. They do seem a bit small. I did order cal-king but the insert on the package says king. We will give them a try
The sheets are very comfortable and made well. They do seem a bit small. I did order cal-king but the insert on the package says king. We will give them a try
We purchased our first set of these flannel sheets last year. We were always complaining of the cold sheets in winter. These flannel sheets are so soft and warm. They are made of a very good quality cotton and nicely priced.
We purchased our first set of these flannel sheets last year. We were always complaining of the cold sheets in winter. These flannel sheets are so soft and warm. They are made of a very good quality cotton and nicely priced.
The split to king size flannel sheets fit very well and are so soft. Had a minor issue with an order which was immediately rectified. Super and prompt customer service!
The split to king size flannel sheets fit very well and are so soft. Had a minor issue with an order which was immediately rectified. Super and prompt customer service!
We ordered flex top flannel sheets. The bottom sheet fits our king Sleep Number bed perfectly - an unexpected plus! The flannel is crazy soft. We'll be ordering another set soon.
We ordered flex top flannel sheets. The bottom sheet fits our king Sleep Number bed perfectly - an unexpected plus! The flannel is crazy soft. We'll be ordering another set soon.
We love our new flannel sheets! They stay on the mattress and are so comfortable to sleep on. I ordered cream sheets and received white ones which was fine with me. The same day I got an email explaining the mix up and offered to ship me the cream ones and just to return the white ones. That shows great customer service and the integrity of your company.
We love our new flannel sheets! They stay on the mattress and are so comfortable to sleep on. I ordered cream sheets and received white ones which was fine with me. The same day I got an email explaining the mix up and offered to ship me the cream ones and just to return the white ones. That shows great customer service and the integrity of your company.
We love our new flannel sheets! They stay on the mattress and are so comfortable to sleep on. I ordered cream sheets and received white ones which was fine with me. The same day I got an email explaining the mix up and offered to ship me the cream ones and just to return the white ones. That shows great customer service and the integrity of your company.
Overall they are a soft and beautiful set of sheets. They do pill up easily.. I also wish they included an extra pillow case. Especially with king size bed. It takes 3 pillows to cover the bed….
Overall they are a soft and beautiful set of sheets. They do pill up easily.. I also wish they included an extra pillow case. Especially with king size bed. It takes 3 pillows to cover the bed….
This is our fourth set of Quahog Bay sheets. Our previous sheets were bought through Amazon. We love these sheets, they are warm and very soft. Really welcome during the recent cold spell and snow we had.
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Description
Features
Dimensions & Sizes
Flannel Sheet Guides
Shipping
Returns
Description
Experience unparalleled comfort and durability with these premium CinchFit American Made 100% Cotton Flannel Sheets proudly hand crafted in the USA. Designed with a deep 15-inch pocket depth and innovative cinching cord elastic, these sheets offer a secure, adjustable fit that conforms to a wide range of mattress sizes and shapes, including split king and split top adjustable beds.
Features
Soft & Comfy
100% Cotton Flannel
Deep 15-inch pockets accommodate thick mattresses and adjustable bed bases with ease
Unique cinching cord elastic wraps 360 degrees around the mattress, ensuring sheets stay tight and securely in place without slipping
Adjustable design allows tightening over time to maintain a perfect fit
Includes convenient cord storage pocket and directional tags for effortless setup
Our Sheets for Adjustable Beds include No-tear reinforced construction with flexible fabric in key areas prevents ripping and extends sheet life, especially suited for split top adjustable mattresses
Versatility & Fit
These sheets are designed to fit a variety of mattress sizes, including Twin XL, Queen, King, California King, and specialized split configurations common with adjustable beds. Their adaptable fit and durable materials make them an excellent choice for traditional mattresses, RV beds, boat mattresses, and more, ensuring a snug, wrinkle-free sleep surface that stays in place night after night.
Elevate your bedroom with bedding that combines American craftsmanship, luxurious softness, and innovative design to deliver the best-fitting, most comfortable sheets that truly stay on your mattress.
Twin XL: 39" x 80" Fitted Sheet, 100" x 66" Flat Sheet, (1) 20" x 30" Queen Pillowcase. Fits up to 15 Inch Mattresses and cinches to fit smaller depths. This size also fits Twin Mattresses (39" x 75")
Queen: 60" x 80" Fitted Sheet, 102" x 90" Flat Sheet, (2) 20" x 30" Queen Pillowcases. Fits up to 15 Inch Mattresses and cinches to fit smaller depths. This size also fits Full Mattresses (54" x 75").
King: 78" x 80" Fitted Sheet, 110" x 102" Flat Sheet, (2) 20" x 40" King Pillowcases. Fits up to 15 Inch Mattresses and cinches to fit smaller depths.
Cal King: 72" x 84" Fitted Sheet, 110" x 102" Flat Sheet, (2) 20" x 40" King Pillowcases. Fits up to 15 Inch Mattresses and cinches to fit smaller depths.
Split Top Queen Sheets (4PC): 1 Queen Fitted Sheet (60” x 80”) with 35" split down the center, 1 Flat Sheet (102″ x 90″), 2 Queen Pillow Covers (20″ x 30″); Universal Split Top Size fits all split lengths. Fits up to 15-inch Depth Mattresses and cinches to fit smaller splits and depths.
Split Top King Sheets (4PC): 1 King Fitted Sheet (78” x 80”) with 35" split down the center, 1 Flat Sheet (108″ x 102″), 2 King Pillow Covers (20″ x 40″); Universal Split Top Size fits all split lengths. Fits up to 15-inch Depth Mattresses and cinches to fit smaller splits and depths.
Split Top Cal King Sheets (4PC): 1 Cal King Fitted Sheet (72” x 84”) with 35" split down the center, 1 Flat Sheet (108″ x 102″), 2 King Pillow Covers (20″ x 40″); Universal Split Top Size fits all split lengths. Fits up to 15-inch Depth Mattresses and cinches to fit smaller splits and depths.
Split King Sheets (5PC): 2x Fitted Sheets (39” x 80”), 1x Flat Sheet (108″ x 102″), 2x King Pillow Covers (20″ x 40″) Fits up to 15-inch Depth Mattresses and cinches to fit smaller depths.
📦 Made to Order This item is made to order. To receive production and shipping updates, you'll need to be subscribed to our emails. Subscribe here or opt in at checkout — unsubscribed customers will not receive order status notifications.
Free shipping on every order. We ship free to all addresses in the contiguous United States. We currently ship only within this area.
In-Stock Items
Items that aren't made to order ship within 1–2 business days of your order.
Made-to-Order Items
Every CinchFit product is made after you order, just for you. Because our timelines change with demand, the current made-to-order shipping time is always posted on each product page, so you know when to expect yours.
Multiple Packages
If your order includes more than one item, it may arrive in separate packages. They may be delivered on different days or at different times, so don't worry if one shows up before the others.
Free returns on everything. Every order from Quahog Bay Bedding includes free return shipping, whether it's a CinchFit product or one from another brand we carry. Just choose which of the two groups below your item belongs to.
CinchFit Sheets & Bedding
Our CinchFit products are made to order in the USA. If you're not happy with yours, you have 30 days from delivery to request a return for a full refund.
Your item doesn't need to be repackaged in any special way.
Because each item is made just for your order, we don't offer exchanges or remakes. We'll refund you in full.
If your item arrives defective or damaged, email us a photo and we'll replace it or refund you right away.
All Other Bedding
These products are made by our partner brands, and we handle returns for them just like our own. You have 30 days from delivery to request a return.
Items must be unwashed, unused, and in resealable packaging.
Refunds are issued for the full price.
If an item arrives defective or damaged, email us a photo and we'll make it right.
How to Request a Return
Log into your account.
Click the item you purchased.
Select Request Return.
We'll email you a prepaid return label. Pack your item and drop it off with the carrier.
Your refund is issued to your original payment method within 3 business days after we receive your return. Your bank may take a few additional days to show it.
Made-to-Order Timelines
Every CinchFit product is made after you order. Current timelines are posted on each product page, so you always know when to expect yours.
