This Serta(R) iComfort(R) Blue Fusion 100 mattress features a firm Serta(R) Hybrid Coil(tm) support system which is the most advanced support system for an ideal trifecta of comfort, support and durability. The mattress also has a TempActiv(tm) balance fabric cover and TempActiv(tm) gel memory foam that is infused with millions of beads for TempActiv(tm) temperature-regulating gel for superior body support.Mattress only. Box spring sold separately. This item is deliverable only by Boscov’s Home Delivery Service for online orders within a 25-40 miles radius of any Boscov’s store (based on your zip code). For more information, go to Shipping. Free Delivery on all Mattress Set Purchases $599 and up after discounts. For bedding warranty information, go to Returns.