Custom Foam Mattresses

Custom Foam Mattresses

Looking for a mattress to perfectly fit into a space with non-standard dimensions? Our custom foam mattress service is a great way to get the exact size mattress you need for an antique bed, child’s bunk bed, RV mattress, and much more!

All of our custom mattresses are made from our long-lasting and supportive conventional foam to ensure that you get a great night's sleep for years to come.

Enter your desired mattress dimensions to get started!

Cushion or Mattress

Quoted prices are for foam only. View our Accessories page for standard and custom cover options.

How To Order
  • Select your mattress size above
  • Please enter dimensions in INCHES
  • Please round fractional dimensions up to the next whole inch to ensure that the mattress is large enough for the expected area
  • Do NOT reduce dimensions to compensate for Dacron fiberfill wrap addition
  • Click "Continue" for a price quote

Conventional foam mattresses are great for people who desire all-around comfort while still wanting proper support. The softness provides relief and alleviates pressure but maintains a firmness that supplies proper body support. Specific product capabilities are dependent on the foam type(s) and additional options selected during mattress customization.

Custom foam mattresses are foam only.
Covers may be purchased under Mattress Accessories.

Foam Types: All Conventional Foam
Sizes: Standard and customized sizes available
Heights: 1, 2, 3, 4, 5, 6, 7 and 8 inches

Foam meets CertiPUR-US® certification.

Return Policy
Custom mattresses cannot be accepted for return unless there is a product defect or a manufacturing error. Please see our Return Policy for more information. If you have questions concerning our return policy, please Contact Us before placing your order.

Manufacturing Tolerances
Custom-cut mattresses and toppers have dimensional tolerances according to the "Custom-Cut Mattresses and Toppers" section of our Dimensional Tolerances table. If your project requires a tighter tolerance, Contact Us for more information about machine cut custom items.

Largest Solid Mattress
The largest solid mattress size available is 76" x 82". When a mattress is ordered larger than one or both of those dimensions, it will be made from two pieces of foam that are glued together. There are no additional gluing charges for oversized mattresses.

Largest Solid Thickness
The largest solid mattress thickness available is 6". When any one mattress is ordered at a greater thickness than that, it will be made from two matching foam pieces glued together to achieve the desired thickness at no additional charge. For mattresses over 8" thick or containing layers of different foam types, please Contact Us.

Write a Review

Excellent bench cushion
Marta | November 27th, 2022
I ordered the high density foam mattress to make a pillow for the bench in our living room. The cushion is perfect! Very comfy, with the exact measures requested, it arrived very well packed and the shipping was fast. Very happy with this purchase. I highly recommend this product and Foam Factory. Thank you!
Perfect fit!
Amber | November 22nd, 2022
Ordered a custom size memory foam mattress for my daughters 'tent' that she prefers to sleep in rather than her bed and it came out perfectly. I feel much better knowing she is sleeping on an actual mattress, and she's happy she can sleep in her 'tent', a win-win! Shipping was also way faster than I expected. Received it about 10 days after I ordered it. Will definitely come here again if I need any other custom cushion.
Sofa cushions
Kristy | November 3rd, 2022
Garret at Foam by Mail is a life saver. I had ordered a firmer foam on line and he reached out to me to suggest I go down in firmness and he was 100% right. I love how our sofa turned out. It is perfect. This company is top notch in my book.
Excellent product
Esperanza | October 30th, 2022
My husband and I have ordered quite a few foam mattress's from your company and always received great customer service and excellent products. Thank you.
Two pieces
Zoe | October 25th, 2022
I ordered to oddly shaped pieces (not your typical full size mattress). They came very quickly and it was communicated very clearly when I might expect them. The foam was great to finish a captains bed I built. I would definitely order from them again.
Much more firm than i expected
Linda Crowther | October 25th, 2022
I am very happy with the service and quality of the product !! I ordered a custom sized HD 36 Foam 6" mattress for my RV, and also purchased the white striped cover (custom size). It is too firm - and i am thinking possibly that the striped cover is so tight that it does not allow the mattress room to 'give'... I would take the striped cover off, but it is so tight, i am afraid i will never get the mattress back in that cover. I have recently ordered a poly foam topper (3") to see if i can soften it up a bit. I think the pictures portraying the foam with 'give' is a little misleading. I .will see if the poly foam topper helps !
Good matress
Jake | October 25th, 2022
Bought a custom mattress, fits great and came quick.
Great product!
Daniel | October 23rd, 2022
I've been using my custom mattress for a couple months now. Wanted to use it before reviewing. The mattress is very nice and comfortable. Quality is great. If I ever need another foam mattress, I'll definitely order again.
Quick delivery, great quality
Kevin | October 11th, 2022
Got my order less than a week after I ordered it, and the foam is very high quality. Only reason it was 4 stars and not 5 was because my sections were cut about a 1/2 inch too wide, so I had to trim them a bit, myself. Still, would definitely purchase again, next time i needed. :)
Great for Rooftop Tent
Dustin | September 16th, 2022
This is a great option for additional cushion in my rooftop tent. Very pleased with the quality for the price.
Foam mattress
Peggy Book | September 12th, 2022
We enjoy this mattress. We have purchased an identical one from you in the past and recommend this product to friends and family.
Foam mattress purchase
Tom Martin | September 6th, 2022
Shipped fast and fit perfectly Thank you!
All Expectations Met!
Tim | August 28th, 2022
A great purchasing experience and I would definitely recommend Foam Factory. I needed three custom pieces for a bed/bench combo I was using for a build out of a Honda Element into a mini camper. There were many options and the pricing was very reasonable. Pieces arrived quickly and the quality was top notch. I ordered the Lux foam for the slat portion and it is firm enough that I do not need a flat board to compensate for the 2"+ gaps when in bed mode. It works perfectly and is definitely a firm mattress. Thank you Foam Factory, I love it!
Perfect replacement!
Steve W | August 26th, 2022
My mom needed a new mattress for her antique bedroom set which was a non-standard size. Being able to custom order to its dimensions made for a perfect fit!
Great Job
MJ | August 22nd, 2022
Custom mattress for our van was built exactly as requested with rapid completion and shipment. Perfect
Perfect Fit!
SH | August 21st, 2022
Beautiful fit! I do wish I had orderer a slightly softer one, and I am sure it will break in with time. I am also a soft cushion person. Thank you for this cushion and our space is amazing!
Not as described on the website
Joe Sembrat | August 19th, 2022
I purchased the mattress to replace one in my RV because the original was too firm. The description of the new one I purchased made it seem that it would be less firm than the one I bought. Turns out that the two are the same - very firm
Harvey pedigo | August 19th, 2022
I bought a 7 " thick foam mattress for a bed in my van. We are going to sleep good !
Great product and support!
Mel | August 16th, 2022
I ordered a single 5" cushion to replace three couch cushions (couch is being used as a bed). It is excellent. It is very firm, so I added a softer topper & it is working very well. I am so thankful to be able to have cushions custom cut, not to mention so quickly! Now that I have the measurements right, I am probably going to order another in a somewhat softer foam to see which works best/is most comfortable for my mom. I do want to give a big thank you to the agents who help you figure things out when you call them, and to the agent with whom I spoke after placing the order. I could not be more impressed with the very thoughtful and swift assistance given both by phone and by email. Thank you!!!
Custom Size Cradle Mattress
Elizabeth Hernandez | August 15th, 2022
I ordered a 3" x 14" x 34" lux foam with dacron wrap to use as a mattress for the family cradle. The cradle was built 31 years ago specially for when my fiance was born. It's been passed down for every baby in the family since he was born and we'll be using it for our little baby when she comes home from the NICU. The cradle isn't the standard size of bassinets or cribs so the original mattress had been custom made by my fiance's grandmother, and though the mattress and the cradle are both in incredible condition, I felt I needed to replace the mattress since it's 31 years old. I'm very happy with the new mattress that I ordered from the Foam Factory. It's very firm as is necessary for a tiny newborn and it was quite affordable. It happened to fit perfectly in a king size waterproof pillow cover. I will likely order from Foam Factory again for her crib mattress.
Custom mattress for my boat.
Brad Schaffer | August 8th, 2022
I ordered a custom mattress and cover for a new boat I purchased. It arrived in 8 days from the day I ordered. It fits perfect and is extremely comfortable. Highly recommend this company. Also they were less expensive than everywhere else I looked.
Arrived early, very comfortable
Niels | August 7th, 2022
Great customer service. Arrived earlier than the original estimate and was exactly as specified. Very comfortable an, definitely coming back for the remaining pieces to our "teenage hangout area"
Great Service!
Mel | August 2nd, 2022
Received very helpful, kind assistance from Foam Factory/Foam by mail agent as I tried to figure out what I was doing and which type of foam I needed to order. I was so happy and surprised at how very quickly the order was completed and I received the nicest custom cut dacron wrapped HD36 HD foam for a couch which is being used as a bed. It is working very well, but my measurements were off, and I've placed a second order which has also been shipped in record time! Thank you so much - The foam is very firm, and I added a soft topper. I also ordered 7" height which was too tall. very thankful for this service as I was trying to figure out how to cut a twin size regular mattress down to size. This is so professional and just PERFECT for the couch, and hoping I figured the height correctly this time! THANK YOU
7" HD36 Foam Mattress
Hunter | August 1st, 2022
Firmer than I thought it would be and great for a side sleeper! Arrived quick and in great shape. Also ordered the cover for it which has proved valuable already.
Mattress and cover
Debra | August 1st, 2022
Fantastic! Just what we needed. Very comfortable and the cover is awesome!
6” Foam mattress
Barb Lindemuth | July 26th, 2022
I am very happy with this purchase and the ease of ordering details for both the mattress and cover. Very nice quality and exactly what I wanted! Could not ask for better!
Great company service
Kathleen Baxter | July 23rd, 2022
Bought four pieces of foam and each one was done perfectly. Great customer service as well.
Great product
Robert Duval | July 22nd, 2022
Had a custom fit mattress for a bunk/couch in our house. Great fit and comfort.
Great Mattress, Perfect Size and Firmness
adam | July 21st, 2022
Ordered a custom sized mattress that fits and feels great. Will be ordering more soon!
Grafe Stephen | July 14th, 2022
This was a totally custom size for a trailer - and it was a perfect fit in the finished product. Very comfortable to sleep on! Thanks!
Harold | July 6th, 2022
The mattress fits great got for upgrade in a roof top tent,sleeps great
Perfect fit!
Diane H | July 5th, 2022
Ordered for a custom "crib" we made for our RV. Exactly what we needed. Thank you.
Nice mattress
Wendy | June 22nd, 2022
I ordered a custom size for my RV and it came perfect fit, also ordered the custom size cover and it fit perfectly, order did not take that long considering it was a custom size. This foam seems comfortable to me has some give, and will be comfy
I like it
PMesser | June 20th, 2022
I ordered the foam mattress for my camper van bed and it's just what I wanted. Although it is firm but comfortable to me.
I did not go wrong!!!
Doug Dingey | June 17th, 2022
I order an extra long 4" thick foam mattress to fit my 7' long couch. Works great, I've been sleeping on it every night!!
Best foam company!
David Korty | June 16th, 2022
This is my third mattress I’ve ordered from this company and every one of them has been more comfortable than any bed I’ve ever slept on. Great product and great people. Thank you!
An excellent experience
John | June 14th, 2022
We received our total order (2 special sized twins & 2 x-long twins) on time and the quality was excellent.
William H Ayers | June 8th, 2022
Great service and good products. Happy with purchase
HQ Regualr custom cut
Kandi Sheets | June 8th, 2022
Ordered a custom cut foam mattress. Installed the mattress to find we should have given ourselves about an inch more leeway. Mattress fits tight for sheets because of that. Regardless, slept like a champ. This bed is absolutely comfortable. Had it made to fit in our RV Roadtrek. Recommend anyone looking for a custom fit mattress. Foam Factory is the place!
Custom RV bunk mattress
David Widd | June 1st, 2022
Love them mattresses. Quick delivery. Comfortable mattress. Fits perfectly.
Great product
Kelli | May 31st, 2022
My custom-ordered piece was delivered very quickly and fit perfectly in my motorhome's overhead bunk. I tried it out over the long holiday weekend and slept great!
Excellent job
Josephine Dittberner | May 25th, 2022
My order was perfect. Its very soft and roll up small for my small B van.
Great service
Phyllis Barker | May 18th, 2022
Arrived quicker than expected. Ordered for an antique bed, just under full size, fits perfectly. Haven't slept on it but seems comfortable enough for a guest.
Comfortable mattress
Kayla | May 2nd, 2022
We ordered a custom size, slightly smaller than a Twin XL, it fit perfectly in our space. I would definitely order from them again.
Always can depend on foambymail
Gwen | April 7th, 2022
I've ordered from your company several times and have not been disappointed yet. Thanks for selling nice products.
Happy customer
Coral Kingwell | April 5th, 2022
I am very pleased with the foam. It's perfect for what I need and the way it was packaged for shipping was excellent,
A Great Solution
Simon | April 5th, 2022
Custom sized topper that works perfectly. Use it daily. Can highly recommend.
Perfect mattress
Susan Profitt | March 25th, 2022
Custom built a sectional sofa with odd depth snd width but these guys nailed it and very quick and reasonable . We love it!!
Custom size fit perfect.
Ron Landis | March 16th, 2022
I needed a new mattress for my van conversion I recently remodeled, so I purchased a 4" mattress of the highest quality. It was cut to my specs and showed up at my door a few days later. It fit perfect I just needed to trim the back corners a bit which I did easily with an electric knife a friend loaned me.
Awesome product
SHARI WHITMAN | March 15th, 2022
Ordered a 7" thick custom mattress for our travel trailer and are very happy with the results. Garrett, from the company, called me personally to discuss the type of foam appropriate for our needs and he was knowledgeable and made the perfect recommendation. The custom cover is also perfect. High quality, made custom to your specifications with fantastic customer service. From order to delivery to my house was approximately 7-10 days. We will be using them again to replace the mattress in the master bedroom in the travel trailer as well. Highly recommend this company and their products.