If it is a poly string, it will bend like an 'L' shape & wont go back to it's original shape. Synthetic & poly string have a very very long shelf life unlike natural gut. Just keep them away from the sun & they will play fine even after 20 years. But natural gut would dried up because they're made from part of animal's intestine.
If you're from badminton background, you will feel that tennis string are so stiff & wont bend like badminton strings. That is because badminton are invented for the gays & tranvestite community.... so they have to be 'soft' ?
