Serta iSeries Tidwell Firm Mattress

ONLY IN-STORE, CHAT, OR CALL 1-866-753-3797
 Free blanket, duvet & 2 goose down pillows with any Serta iSeries or iComfort mattress purchase.


$1,099.99 - $2,099.99 $999.99 - $1,999.99


Additional Information

Get ready for enhanced support and all-over comfort! With a higher coil count, Serta’s new breakthrough micro-coil system MicroFlex™ Coil, can only be found in our exclusive iSeries collection.

Enjoy the feel of a traditional firm mattress and benefit from enhanced support and temperature neutrality with the Tidwell Firm mattress. A standout in the Serta® iSeries® Cool Elegance® collection, this mattress features EverTemp™ Technology, made to keep materials comfortable regardless of temperature or humidity, and Serta’s MicroFlex™ Coil, a revolutionary micro-coil system offering full-body support. 

Main Features

  • FireBlocker® Fiber
  • 1.5" Serta® PillowSoft® Foam
  • ½" Serta® Support Foam
  • ¾" Cool Action™ Dual Effects® Gel Memory Foam
  • MicroFlex™ Coil
  • Custom Support® Individual Advantage™
  • 886 with Total Edge® Foam Encasement
  • Low Profile Foundation Available

Mattress and Foundation Height

  • Mattress Height: 11.8"
  • Standard Foundation Height: 9"
  • Low Profile Foundation Height: 6"


  • 10 Years Non-Prorated
  • Zone 2 - Firm
  • Tight Top
  • Innerspring

Product Code SRIS02


Our current delivery area includes the 48 contiguous United States.

If you live in DC, DE, MD, NJ, RI, the California Bay Area, and limited addresses in the following states - CT, FL, MA, ME, NH, NY, PA & VA please call 1(866)753-3797 for details), most items will be available for next day delivery. You will be able to schedule a date and a 4 hour time window for your delivery at the time of purchase. Delivery appointments are available Monday through Wednesday & Friday through Sunday during regular business hours. Sunday and Monday deliveries are not available in FL. Limited evening hours are available.

If you live in the Los Angeles, CA or Dallas, TX metropolitan areas, you will be offered a Preferred Delivery Day at the time of purchase. The 'Preferred Delivery Day' is based on the zip code of your order and an estimate of when our delivery team will be in your area. Actual delivery days may vary according to location. Our local delivery agent will call you to set up an exact delivery day and 4 hour time window. Delivery appointments are available Mon-Fri between 9AM & 6PM.

What To Expect From Your New Mattress

If you live in the 48 contiguous US states but outside the above areas, your order is estimated to be delivered within 2 to 3 weeks, remote areas may take longer. You will receive a call when your order has arrived at our delivery agent, approximately 10 days after placing your order. The delivery agent will set up a convenient delivery day and 4 hour time window. Delivery appointments are available, Mon-Fri between 9AM & 6PM, to all addresses that are road accessible. Cancellations of orders in transit in these areas involve a restocking fee of 20% of the retail price of the merchandise, plus local delivery charge.

Please note: The Sleepy’s Comfort Exchange Program is only available in the following states: DC, DE, MD, NJ, RI, the California Bay Area, and limited addresses in the following states - CT, FL, MA, ME, NH, NY, PA & VA (please call 1(866)753-3797 for details).

Ferry service may be required for delivery to select locations. Additional fee will apply - may vary by location. Please call 1-866-SLEEPYS for more information. 

A person over 18 must be present to accept any mattress or furniture delivery.

Some items are shipped via UPS. These items will arrive separately in approximately five (5) to nine (9) business days (Monday through Friday, not including holidays).