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  • SleeperKing RV Mattress – Serenity Series
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    SleeperKing RV Mattress – Serenity Series
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Serenity RV Mattress — Copper-Infused Comfort

4.9 728 reviews ✓ Best Seller

$550.00 USD
$1,100.00 USD $550.00 USD
🚚 Free Shipping to the Continental USA
Made in the USA 120 Night Risk-Free Trial Free Shipping on All Orders
Which size do I need?

RV Bed Size Reference Guide

Measure Once. Sleep Better.

RV beds don't follow household sizing — an RV queen is usually six inches shorter than the one in your house. Measure your platform, then match it below.

Size Dimensions Classic Serenity Premium
Twin — 38″ Wide
RV Standard Twin Bunks, dinette conversions, slide-out beds 38 × 74 Yes Yes Yes
RV Twin XL Longer bunk platforms 38 × 80 — Yes —
Full — 48″ to 54″ Wide
RV Full Narrow three-quarter platforms 48 × 74 Yes Yes Yes
RV Standard Full 54 × 74 Yes Yes Yes
Queen — 60″ to 66″ Wide
RV Short Queen The most common RV bed size 60 × 74 Yes Yes Yes
RV Queen Full 80″ length, same as a household queen 60 × 80 — Yes Yes
RV Olympic Queen Six inches wider than a standard queen 66 × 80 Yes Yes Yes
King — 70″ to 72″ Wide
RV Custom Non-standard 70″ platforms 70 × 74 — Yes —
RV Short King Fifth wheel and full-profile masters 72 × 74 Yes Yes Yes
RV King 72 × 80 Yes Yes Yes
RV California King Longest platform we build 72 × 84 Yes Yes Yes

How to measure

  1. Pull the old mattress out and measure the platform, not the mattress sitting on it.
  2. Take width at the narrowest point and length at the shortest.
  3. Note any radius corners, angled walls, or a nightstand cutting into the foot of the bed.
  4. Check headroom — slide-out and loft beds limit how thick a mattress will clear.

Between two sizes? Order the smaller one. An oversized mattress bows at the corners and wears out early. RV builders also change bed platforms between model years, so measure even if you know your floorplan. Ask us about a custom cut for radius corners or an odd platform.

Luxury RV Sleep: The SleeperKing Serenity Series — Copper Comfort Hybrid (11")

Upgrade your RV bedroom with the SleeperKing Serenity Series, an 11-inch luxury mattress made by Spring Air exclusively for SleeperKing. This Copper Comfort Hybrid is designed for side, belly, and back sleepers alike, with support built for all body types.

Experience the Serenity Difference:

  • ✦ Quality Quilted Tops: Not Stretched Fabric — real quilted construction built to last on the road.
  • ✦ Adaptable Comfort: Perfect for every body and sleeping position.
  • ✦ Superior Support: 1,000 Comfort Coils provide individualized support.
  • ✦ Targeted Back Support: Unique Copper Infused Lumbar Layer (the blue coils in the middle!) for enhanced spinal alignment.
  • ✦ Cooling Technology: Gel Enhanced Comfort Foam helps regulate temperature.
  • ✦ Easy to Handle: Reinforced Handles for effortless rotation.
  • ✦ Cool and Refreshing: Features a premium Cool to the Touch cover.
  • ✦ Versatile Sizing: Available in RV, standard, and custom sizes to fit your needs.
  • ✦ Simple Setup: Ships roll-packed for easy transport and installation.
120-Night Guarantee
Sleep on your Serenity Series for up to 120 nights — if it's not right, send it back.
Made with Pride in the USA, straight from the Heartland. Treat yourself to the best sleep on the road — order your SleeperKing Serenity Series Copper Comfort Hybrid today!
Best Mattress for RV and Trucking
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"Common Questions From RV Owners

A few quick answers before you order.
RV Standard Twin, RV Twin XL, RV Standard Full, RV Full, RV Short Queen, RV Queen, RV Olympic Queen, RV Short King, RV King, RV California King, and RV Custom — 11 sizes, the most of any RV series. Pricing varies by size
Serenity adds a copper-infused lumbar layer and gel-enhanced comfort foam, plus the widest size range of any RV series — Classic offers dependable, single-sided support, while Premium adds a dual-sided flip design.
Yes — 120-night guarantee, backed by Spring Air's manufacturer warranty.
RV Owner Reviews
What RV Owners Are Saying
Real RV owners. Real road trips. Real sleep.
"The copper lumbar layer is everything. I have degenerative disc disease and sleeping in our RV was brutal before the Serenity. Now I wake up without that lower back stiffness I dealt with for years. Absolute life changer on the road."
RK
Ron K.
Retired · Full-Time RV · Class C · Boise, ID
"My husband and I are both side sleepers with completely different body types. The 1,000 individual coils adapt to both of us independently. No more fighting over comfort. Best RV upgrade we've made in 6 years of full-time travel."
DT
Diane T.
Full-Time RVer · RV King · Austin, TX
"I'm a stomach sleeper and have never slept well in an RV. The Serenity changed that completely. After 40 nights on it I used the 120-night guarantee to keep it — not return it. Cool to the Touch cover keeps me sleeping all night in the Florida heat."
ML
Mary L.
Full-Time RVer · 5th Wheel · Flagstaff, AZ
"The gel enhanced foam is no gimmick. We camp in the desert southwest every summer and the Serenity keeps temperature regulated even when the outside temp is brutal. The reinforced handles make rotating it in our tight RV bedroom so easy."
CW
Craig W.
Full-Time RVer · Class A · Tucson, AZ
"I've tried 5 RV mattresses over the years. The Serenity is the first one designed for every sleeping position. I switch between side and back throughout the night and it adjusts perfectly. The 11-inch profile feels like a real bed, not an RV compromise."
SN
Steve N.
Weekend RVer · Travel Trailer · Kansas City, MO
"Roll-pack delivery made setup in our RV bedroom completely painless. Unrolled it, it expanded perfectly, fit our RV Short Queen like a glove. 8 months in and the copper-infused lumbar layer still feels as supportive as day one."
PG
Paula G.
Full-Time RVer · Class B · Asheville, NC