You can sign up to be notified by SMS, email or both.
To do this, follow the steps below:
1. Go to the website and find the sold out product.
2. Chose your size.
3. Scroll down, until the forms are visible.
4. Enter phone number, email or both. Click TEXT ME or EMAIL ME. You will now be notified when the product is back in stock. Underneath you can see what the form looks like: