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Waterbeds have been around for a long time. Fast forward to today, waterbed mattresses have gained a solid following. Want to find out more about waterbeds? Please take a look below at our buying guide.
Key Specs Compared
Numbers match the reviews below (tap to jump).
| # | Motion | Size | Frame | Warranty | Included |
|---|---|---|---|---|---|
| 1 | Near-waveless | King | Hardside | 20-yr | Not stated |
| 2 | Full motion | King | Hardside | 20-yr | Not stated |
| 3 | 95% reduced | King | Hardside | 4-yr full | Fill kit bundle |
| 4 | 99% waveless | Cal king | Hardside | Not stated | Fill kit, conditioner |
| 5 | Semi-waveless | Cal king | Hardside | Not stated | Fill kit, conditioner |
| 6 | Semi-waveless | Super single | Hardside | 12-yr | Not stated |
✓ yes · ✗ no · – not confirmed · Specs as stated on the Amazon listing or by the maker · Not a treatment for any condition
Possible Benefits of Waterbeds
- Even support: Waterbeds spread your weight evenly across the surface, which some people with back pain find comfortable. There is little research on waterbeds for back pain; studies of mattresses generally favor medium-firm surfaces.[1] See a doctor if back pain is severe or doesn’t go away.[2]
- Joint comfort: Some people with arthritis find the even support and gentle warmth of a heated waterbed comfortable. A waterbed does not treat arthritis; talk to your doctor about joint pain.[3]
- Comfort for light sleepers: Most people have trouble sleeping at some point. A comfortable bed can help you relax, but a waterbed does not treat insomnia. If you often can’t sleep, talk to a doctor, because there are effective treatments.[4]
- Pressure: Waterbeds spread out pressure on the body. People who are bedridden or have pressure sores need a support surface chosen with their care team, plus regular changes of position.[5]
- Easy to wipe clean: The vinyl surface doesn’t soak up dust like fabric and foam do, though the pad and sheets on top still need regular washing.
Types of Support in Waterbed Mattresses
Depending on your support needs, waterbeds usually come in two types.- Hard-sided waterbeds: This type of waterbed mattress needs a special frame, usually wood, to support the sides and base. Without a solid frame, they can’t hold their shape and flop sideways. They are inexpensive.
- Soft-sided waterbeds: A soft-sided waterbed mattress is built more sturdily and robustly and doesn’t need frame support. Zippered inside a soft fabric cover, they have sturdy sides that stand on their own. They are pricier compared to hard-sided waterbeds.
Types of Degree of Motion in Waterbed Mattress
By degree of motion, waterbeds are classified into three types.- Free-flow waterbeds: Water flows freely; they require a frame to keep it in place; motion transfers significantly when a sleeping partner gets up.
- Semi-waveless waterbeds: Foam is added to reduce the floating feeling.
- Waveless waterbeds: This type has very little motion or waves. A combination usually makes it foam and fiber. It also includes air pockets to reduce waves.
Factors To Consider Before Buying Waterbed Mattresses
- Size: Know the measurements if you plan to buy a wooden-frame waterbed.
- Comfort: Comfort depends on the firmness. You can increase firmness by adding more water. Remember not to overfill the mattress. The material also affects comfort.
- Noise: If not filled properly, the waterbed makes a water-splashing noise. Follow the manual to fill the mattress with the right amount of water.
- Durability: It depends on how you handle the mattresses. When properly maintained, they can last many years, and some come with long warranties. Don’t forget to keep pets away from waterbeds.
- Price: Waterbed mattresses are no secret to be more expensive than regular mattresses. The waveless mattress is more expensive than semi-waveless and free-flow waterbeds.
Our Waterbed Mattress Picks
We hope you love the mattresses we recommend!1
- This king deep-fill waterbed mattress is for a full-depth, rigid-side (hardside) frame.
- The maker describes near-waveless performance with a multi-layer wave elimination system and extra mid-body support.
- It uses 24 mil vinyl with a sculpted sleep surface, per the listing.
- InnoMax lists a 20-year warranty. Use it with an approved heater, safety liner and conditioner.
2
- This king free-flow waterbed mattress has no wave reduction, for a full-motion, floating feel.
- It fits a full-depth, rigid-side box frame.
- It uses 20 mil vinyl with double-reinforced corners, per the listing.
- InnoMax lists a 20-year warranty. Use it with an approved heater, safety liner and conditioner.
3
- This king bundle includes a waterbed mattress, liner, mattress pad, heater and fill and drain kit.
- The mattress has about 95% motion reduction from a 4-layer wave reduction system.
- It is made to fit a traditional wood-frame (hardside) waterbed; the frame is not included.
- It comes with a 4-year full and 11-year prorated warranty, per the listing.
4
- This California king hardside waterbed mattress is 99% waveless, per the listing.
- It has about 1 to 2 seconds of slow movement.
- It uses quality vinyl with reinforced corners and is made in the USA.
- A fill kit and conditioner are included.
5
- This California king semi-waveless mattress has about 8 to 10 seconds of movement.
- It has reinforced corners and is made by US Water, per the listing.
- A 4 oz bottle of conditioner and a fill kit are included.
- Choose this if you want some motion, but less than a free-flow mattress.
6
- This super single (48 by 84-inch) semi-waveless mattress fits hardside wood-frame waterbeds.
- It has about 8 to 10 seconds of movement.
- It uses high-end vinyl with reinforced corners, per the listing.
- It comes with a 12-year warranty.
Index Table: Top Rated Waterbed Mattress
| No. | Product | Image | Features | Brand |
|---|---|---|---|---|
| 1 | InnoMax Genesis 800 - Ultra Waveless Lumbar Support Waterbed |  |
| InnoMax |
| 2 | InnoMax Sanctuary Free Flow - Full Wave Deep Fill Waterbed |  |
| InnoMax |
| 3 | Waterbed Hardside Better Bundle - 95% Waveless Waterbed Mattress Bundle |  |
| Waterbed |
| 4 | U.S. Water Waveless Hardside - 99% Waveless Cal King Waterbed |  |
| U.S. Water |
| 5 | Classic Semi Waveless - Cal King Semi Waveless Waterbed Mattress |  |
| Classic |
| 6 | Dijkoo Zymise Super Single - Semi Waveless Hardside Waterbed Mattress |  |
| Dijkoo |
Sources
- Radwan A, et al. Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment in adults with or without back pain; systematic review of controlled trials. Sleep Health. 2015;1(4):257-267. Accessed October 15, 2026.
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH). Back Pain. Accessed October 15, 2026.
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH). Arthritis. Accessed October 15, 2026.
- National Heart, Lung, and Blood Institute (NIH). Insomnia: Treatment. Accessed October 15, 2026.
- MedlinePlus, National Library of Medicine. Pressure Sores. Accessed October 15, 2026.
Update History
- Oct 2026: Product picks reviewed and updated; added a Key Specs table; added Sources (peer-reviewed studies, NIAMS, NHLBI, MedlinePlus); filled the remaining Key Specs cells from product listings
- Feb 2022: Added InnoMax Sanctuary Free Flow Waterbed
- Sep 2020: Added U.S. Water Waveless Hardside Waterbed
- Oct 2019: Added Hardside Waterbed Mattress Bundle
- Apr 2019: First published
