Siena Hybrid Firm NA1

960 Pocketed Coil with Active Guard Perimeter Edge Double-sided 480g Thick Matelass Cover 1in Deep Puff Firm Quilting Insulator Pads Adjustable Friendly Top Seller 10 Year Warranty The Siena Collection is our Double-Sided Pocketed Coil collection. The Siena Hybrid Firm should be your go to mattress when look for something extra firm. It is a double-sided, pocket coil mattress with a luxurious 480g cover on both sides. Get twice the longevity, for a half the price. Its durable, comfortable and doesn't break the bank.