These high-rebound materials include
natural rubber, sponge rubber foams,
neoprenes and some types of urethane
products. Materials of this type are used
in applications requiring a combination
of cushioning and resilience, such as
shoe inserts, gaskets and constant-load
contact switches.
Slow-recovery materials do not instantaneously
recover their full thickness and
therefore do not return stored energy.
This low resilience makes them desirable
for applications requiring low rebound
and high energy absorption, or damping.