Mattress Insider logo
Custom Mattresses - Free US Shipping
[woocommerce-currency-selector format="{{code}}" flag=1]
Questions? We're open! Call us! 888-488-1468
Mattress Insider logo
Custom Mattresses - Free US Shipping

Are you looking for a custom size mattress, topper, linens, or mattress protector for your RV, Boat, Semi, Sofa Bed, Antique Bed, Camper, or other custom project? We can do almost any size or shape - including oversized mattresses!. We can do cut corners, radius corners, Airstream mattresses, beveled edges, and odd rectangular dimensions! We can customize the arrangement of layers and densities to fit your exact needs.

Anything can be made!

We have a large assortment of the most innovative foams available including Bayer and Preserve Visco Elastic Memory Foam, Natural Latex from Latex International, Gel Memory Foam, and Plant Based High Density foams. All custom mattresses will be made with a luxurious 1/4" quilted cover in one of our 3 fabrics: Certified Organic Cotton, Cool-Max by Dupont, or Bamboo.

Custom Mattress Shape : Round Bed Mattress

We use only the highest quality USA made open-cell plant based temperature neutral foams. All of our memory foam and high density foams have been tested by the independent laboratory Certipurus and have been certified to be non-toxic.

All custom mattresses come with a 10 Year Manufacturers Warranty. All of our mattresses pass the strict federal CFR 1633 flame retardant mattress standards.

Production time is anywhere from 1-2 weeks (call for lead time). Transit time to the east coast is 2-3 business days and 4-5 business days on the west coast. Your custom size foam mattress will be compressed, sealed in plastic, boxed, and shipped to you via FedEX Ground.

A Few of Our Customer Testimonials:

"So glad I decided to do the custom size mattress. It fits perfectly in the little Roadtrek. It feels nice and firm yet comfortable. Thank you for a nice product and great customer service!" Katherine, Los Angeles CA.

"The custom mattress I ordered and received from you is excellent. I received it 2 days earlier than projected. I will certainly recommend Mattress Insider to anyone who needs a mattress." Deanna Huston, Greenwich, CT.

"Thank you so much for taking my order and getting us two of the most comfortable mattresses I have ever laid upon! We took them to the RV dealership today and put them on the bunk beds. They fit perfectly! We also gave Rick at Nortwood RV your website as he was really impressed with your mattresses as well. Thank you again for all your help and I will now be ordering the encasements and bedding for them. Thank you again, Jonathan and Mattress Insider!!" Darlene Foster, Orlando, FL

How to Obtain a Quote for a Custom mattress Size
  1. Using a tape measure, obtain the dimensions of the surface the mattress is going on (plywood, platform bed, plywood, etc). Measure the longest length and the widest width. If it’s an odd shaped mattress, we can still give you a quote over the phone, but we may need a template or a schematic before we start production from your RV or Boat manufacturer or we can tell you how to make one).
  2. If possible, obtain the existing mattress dimensions (not required but helpful).
  3. Note the height of your existing mattress (if it’s still available) and note if you have any height restrictions (mattress is close the ceiling, you have a low headboard, etc)
  4. Double check your measurements one more time. Because of the labor and cost of materials involved, all custom mattresses are non-refundable once production is started and there are no returns, cancellations, or modifications.
  5. Give us a call for a quote! 888-488-1468!

Below are some of the custom mattress projects that have been done recently.

custom boat mattress
Custom Cut Corner RV Mattress
Custom Mattress: Hinged Mattress

We've customized mattress for all the major RV brands, including Airstream, American, Coachmen, Fleetwood, Starcraft, Baja, Sunnybrook, Allegro Bay, Edge, Jayco, Northwood, Skyline, Thor, Winnebago, and more.

Radius or rounded corners - How To Measure

If you know what size you need for your custom mattress and just have rounded corners, we've made this video to make it easy for you to see how to measure your radius cut(s).

Scroll to Top