Yes, but sometimes the weather conditions during shipping make them a little stiffer. This is because they are made of compression EVA material, which is exposed to ambient temperature.
Wear them for a week and they will regain their unique softness, or soak them in warm water for 30 minutes.
Also together with the slides in the package you will receive a card with step-by-step instructions on what to do to make them regain their unique softness, follow it.