California King

iComfort Blue 300 Firm

Next day Delivery order by 3pm.
Same day Delivery order by 1pm.
Free Local Delivery
Express delivery available

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The Blue 300 Firm model combines the feel of an extra-firm mattress with the benefits of our latest breakthroughs in memory foam technology. It combines our TempActiv™ Gel Memory Foam with a layer of EverCool® Fuze™ Memory Foam for enhanced cooling comfort that also supports every curve of your body. It also features a layer of Deep Reaction™ Memory Foam for a substantial, deep-down feel not often found in traditional memory foam.

Key Features

TempActiv™ Gel Memory Foam

Evercool® Fuze™ Memory Foam

Deep Reaction™ Memory Foam Serta® Support Core

Compatible with Serta Adjustable Foundations


Comfort Layer

¾” TempActiv™ Gel Memory Foam

1” EverCool® Fuze™ Memory Foam

1” Serta® Support Foam

1 ½” Deep Reaction™ Memory Foam

Support System

7” Serta® Ultimate Edge® Foam Core

Comfort Level No
Mattress Height 11.25
Warranty 10 Years
Mattress Dimension & Coil Count

Twin Width: 38" Length: 74"

Twin XL Width: 38" Length:80"

Full Width: 54" Length: 75"

Queen Width: 60" Length: 80"

King Width: 76" Length: 80"

Cal King Width: 72" Length: 84"

From the time order is placed, Sleep Center will contact you within 2 Business hours to confirm delivery day and time window.
Mattresses that are in stock will be delivered same day or next day.
Mattresses that are not in stock may take 4-8 business days for the delivery of your mattress.
The delivery team will bring in the mattress and place your new mattress into your bedroom, unpack it and take away the packaging for you.
Removal of your old mattress set is included. You must notify the delivery personnel at the time of delivery of the mattress set.
120 Days
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