The Mt. Tom collection is our starting line-up of double sided traditional innerspring mattresses. Its individual pocketed coils are a 13.75-gauge steel for long lasting durability and support. You will find over 680 individually pocketed coils, including Caliber Edge coils that provide extra support at the head and foot of the mattress, as well as along the sides. No more feeling like you are sliding off the mattress when you dress in the morning!