King Koil® Extended Life™ mattresses are engineered to be durable and supportive for anybody,from big and tall people down to the most petite individual. These heavy-duty-plus mattresses are built to last - with a warranty against sagging or body impressions for 25 years! Our XL Mattress Collection features the eXtended LIfe Foundation, which surpasses the standard wooden foundation with three times the support. We use the most resilient high-density foams and memory foams, the most durable natural latex, and every high-performance feature to maintain a long-lasting, restful and healthy sleep.
| Size | Coil Count |
|---|---|
| Twin | 253 |
| Twin XL | n/a |
| Full | 368 |
| Full XL | n/a |
| Queen | 450 |
| King | 575 |
| Cal King | n/a |
Compare features of different product lines here
Stretch Knit Cover
SafeGuard®
Superior High Density Foam Quilt
Enhanced Talalay Conform Latex - select models
High Density Memory Foam - select models
Superior High Density Foam (1.8 density) - select models
Enhanced Superior High Density Foam - select models
Superior High Resilience Foam - select models
High Density Performance Foam - select models
eXtended LIfe Performance System - Double Offset Coil (see coil count below)
Contour Flex Pro Coil System - heavier gauge inter-connected coils (more expensive models)
Balanced Base Foam
Excellent Edge™ Foam Encasement
eXtended LIfe Foundation
25 Year Limited - first 15 years Non-Prorated Warranty Non-Prorated + 10 years Prorated Warranty Prorated
Body indentation Body indentation of 1" or greater
