Who am I?

No one waits for me outside patiently, Until I arrive very late or early, Are you made of leather efficiently? Now you are formed by cork or jute firmly. You can take me to good places nicely, Protect me from the harsh habitat lovely, You help people who needy and lively, Allow my fine feet to breathe and pretty. You give me comfort and tranquility, If you are new ,you will bite painfully, I can't cut my foot for facility, And I can mend or change you favourably, Adverse things are tackled by your battles, Who am I ? Be honest, the cozy chappals.