Our verdict
The original Serta iComfort Blue 100 Gentle Firm sample had a soft initial surface followed by a firmer, supportive feel. In Ben’s test, it showed modest sinkage and little visible bounce. It may have appealed to back or stomach sleepers who prefer a firmer foam bed; side sleepers who need deep shoulder cushioning may prefer something softer.
Older model: This review records the 2018 Blue 100, not a test of the current iComfort line. Specifications, prices and retailer terms have changed. Yawnder may earn a commission through affiliate links.
Feel and motion in our test
Ben described the surface as soft at first, with a firmer layer limiting deeper sinkage. He observed little motion transfer in his demonstration and noted that the ball did not bounce much. No mattress eliminates movement entirely, and comfort depends on body size, position and preferences.
He thought the firmer support could work for some heavier sleepers, but the original review did not establish a weight limit or long-term durability. Test any current mattress yourself when possible.
Original video demonstrations
These videos document the older mattress, including the review and demonstrations of its behavior and construction.
Construction of the reviewed model
The manufacturer’s listing at the time described TempActiv gel memory foam, EverCool Fuze memory foam and an Ultimate Edge foam support core. The tested model was all foam, rather than a coil hybrid, and was described as compatible with Serta adjustable foundations. These specifications apply to the old sample; do not assume they describe current iComfort models.
The original mattress arrived uncompressed via an in-home delivery service. Ben noticed little initial odor. Delivery options and individual sensitivities vary.
Comparing with today’s options
Serta still sells iComfort mattresses, including current iComfort and iComfortPro models, but a shared name does not mean identical materials or feel. Compare the specific model’s construction, firmness, height and support requirements; ask the retailer whether it works with your adjustable base.
If you liked the old Blue 100’s firm foam feel, start by trying current firm foam options rather than assuming a named successor is identical. For other feels, compare our Tempur-Pedic, Nectar, Purple, Sealy and GhostBed options. These differ in construction and should be compared individually.
Buying and warranty
Historical prices and the old 120-day offer should not be used as a current quote. Confirm the exact model, total price, delivery, return fees and warranty with the seller. Serta’s current online collection advertises a 100-day trial and a limited mattress warranty; read the current terms because retailer policies can differ.
At Yawnder’s Encinitas showroom, call ahead to check which Serta models are on display. Bring your preferred sleep position and give each mattress time in that position.
Common questions
Is the Blue 100 the same as a current iComfort?
No current model should be assumed identical to the older reviewed Blue 100. Check its label and construction.
Is it a hybrid?
The Blue 100 in the original review had an all-foam support core. Other iComfort generations and configurations differ.
Does the mattress sleep cool?
The sample used gel memory foam; the review did not measure temperature. Your bedding, room and individual heat sensitivity also matter.