* Ultra Gel™ layer adapts and cools as you sleep* 2000 Mirapocket springs for firm, zoned support* 1000 mini springs add comfort and breathability* Boxtop finish for extra cushioning Enjoy a cooler, more supported night’s sleep with the Silentnight Ultra Gel 3000 Pocket Boxtop Firm Mattress. Designed with a responsive Ultra Gel™ layer, it adapts to your movements and helps ease pressure while keeping you comfortably cool. The dual-layer spring system includes 2000 Mirapocket springs and 1000 mini springs, working together to distribute weight evenly and reduce partner disturbance. The firmer spring unit supports spinal alignment, making it a great choice for back and stomach sleepers. A breathable mesh border and soft-touch cover add to the comfort. Finished with a plush boxtop for that extra layer of depth.