This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
store location
My Cart

Sleepworld Designs
Rivers Collection Trinity River Cushion Firm Mattress

In stock
Add to wishlist
Total (per item)
Discount Price $749.99 Starting At $749.99
$1,319.99 - $2,039.99
(up to 43% off)
$1,319.99 You Save $570
delivertoDeliver to:

120 Night Guarantee

Free Delivery

Best Price Gurantee

Special Financing

Bought Together


Try Before You Buy!

Find Mancini's Sleepworld store nearest you to try the mattresses before buying!

Change Your Location

About Sleepworld Designs Rivers Collection Trinity River Cushion Firm Mattress

For over 50 years Mancini's Sleepworld has been offering quality and value and with the new Sleepworld Design's Rivers Collection, the legacy continues. This premier hybrid series unites the best of both comfort worlds with buoyant supportive coils and body conforming foam working together in harmony. Our Trinity River hybrid all about quality and proper spinal and hip support for a healthy and restful night's sleep. The latest in high density comfort foams support technologies and 800 series foam-encased pocketed coil technology comfortably relieve pressure on the hips and shoulders and provide exceptional conforming back support. Our flex edge foam encasement delivers advanced edge-to-edge support, which increases the comfortable sleeping surface area of the mattress by 15 percent. This encasement leverages innovative precision-cutting technology, which contours exceptionally well when used in conjuction with a power base. Our stretch knit panel fabric features sustainably sourced, heavy weight, 4-way stretch TENCEL to deliver a perfect balance of durability and softness. Also, highly breathable and natural, TENCEL draws excess heat away allowing you to drift into a comfortable night's sleep. Proudly made in the U.S.A. and built with environmentally friendly foams, fabrics and sustainable forest lumber. Exclusively available at Mancini's Sleepworld!

Feature highlights

Suitable For Adjustable Base
Motion Separation
Edge Support

Other specifications


More Information
BrandSleepworld Designs
CollectionsRivers Collection
Mattress In A BoxNo
FirmnessCushion Firm
Shipping Height11
Shipping Length60
Shipping Width80
Warranty10 year non prorated
Quilting Layersn/a
Comfort LayersFoam
Support System8 800 Pocketed Coil
Edge SupportYes
Hand CraftedNo
Cooling TechnologyNo
Motion SeparationYes
Suitable For Adjustable BaseYes


Suitable For Adjustable Base
Motion Separation
Cooling Technology
Edge Support

Question & Answers


There are no reviews for this product
Customer images or videos
There are no customer images for this product
Copyright © 2021 Mancini’s Sleepworld