a715a371_on__Hardside_Softside_Mattress__0
[1] c- [2] b- [3] About 14% of hardside waterbed owners report an initial off gassing odor, usually from the vinyl. Softside beds typically do not have this complaint because the vinyl chamber is encased in the bed. [0] 
No initial odor / off gassing
Unbiased Waterbed Reviews and Ratings 2014 : Complaints, Advantages, Disadvantages and Comparison: Hardside Softside Mattress
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