Connected Coil: The connected
coil system connects each row together with helical wires. Each coil
unit is made of a single wire attached to the next row by helical wires. This
type of coil is often made into a lattice of coils rather than rows,
allowing more coils per mattress than other constructions. This design
allows each coil to distribute weight to a great number of springs
resulting in less stress on each coil. Mattresses with connected coils
last much longer and are less susceptible to sagging over individual coils. Serta uses a continuous coil system unlike any other company, in which a
single metal wire makes up an entire row of coils which has
proven itself to help its mattresses last longer than 10 years.
Pocket Coil/Individual Coil or Marshal Coils:
A pocket or independent coil is a cylindrical spring wrapped in its own
fabric pocket. This construction is designed to give the most contour
of any support system. Each coil works independently which means that
you will feel your partner move much less. Each pocket coil absorbs the
weight placed on it without distributing the load to other coils.
Because of this, it is possible that the coils will provide less support
over time, particularly for heavier people. This type of coil is a good
choice for people who toss and turn and for their bed partners because
the motion separation may prevent waking from a deep sleep which is very
important for well being. Renue by Corsicana, Serta Perfect Sleeper and iComfort Collections, Honest Sleep, and Savvy Rest use this type of coil
in certain collections of their mattresses with reinforcements added to help increase longevity. Serta iComforts also have a patent on staggered pocketed coils as seen above to help with longevity and support.
Click to learn helpful information about mattress terms and categories!