The oxygen capsule system has allowed them to combine the properties of softer sponges into a more medium firm sponge .
Stiga have definitely produced a high quality rubber which can produce a high level of spin with the plastic ball .
The oxygen capsule system has allowed Stiga to combine the properties of softer sponges into a more medium firm sponge .
Stiga have definitely produced a high quality rubber which can produce a high level of spin with the plastic ball .