About 28% of these owners report a sagging problem. Support tends to be fair or better given the beds' superior coil system and the presence of at least some conforming material. Double-sided models appear to have better durability / longevity than one sided but are about 30% more expensive than one-sided. iComfort Hybrid / iSeries. Serta innerspring mattresses perform similar to the average mattress for limited adult use or everyday child use. And negative / neutral reviews are often only available after going through many pages. Serta Sealy Pillowtop Mattress. Support Hasn't lost its shape or durability. This one lasted only 2! iComfort Hybrid / iSeries. See, Mattress Buyer's Guide For Heavy, Light People, Serta Innerspring Mattress Ratings – Summary, Weight – Ease of Lifting, Moving, Handling, mattress guide for large and small people, reduce heat trap complaints significantly, Like its competitors Sealy and Simmons, Serta provides, Serta offers a 120-day trial for iComfort Hybrid / iSeries. Those models with memory foam tend to perform best on this issue. Some models, however, are double sided and flippable. It will feel different when you/re in your pajamas and all comfy. iComfort Hybrid / iSeries. Topper Usage No longer does my back ache in the morning when I wake up. (Back) Pain Relief Potential Most complaints for customer service have to do with what is perceived as a lack of help and professionalism regarding warranty claims. continuous coil (391 coil count queen) or pocket coil (711 coil count queen), continuous coil (520-800 coil count queen) or pocket coil (739-886 coil count queen), pocket coil in coil (952-1008 coil count queen), COMMENT: The thinner the mattress, the more friendly it tends to be for an adjustable bed base. iComfort Hybrid / iSeries. (Learn how owner satisfaction is determined.). //-->. google_ad_width = 200; Parts that more often than not, get hurt by innerspring mattresses.