Go to the SleepCurve Company's official website: http://www.sleepcurve.com. Click on "Shop" and you will see the products divided into sections.
Select the type of mattress you need. For example if you have a Moses basket style bed, click on "Moses basket mattress." If you have a standard crib, click on "Crib mattress."
Measure your mattress with a measuring tape if you are not sure which size you own. Compare the measurements to those provided on the SleepCurve Company website to see which one will fit your baby's bed.
SleepCurve's website provides the following dimensions: For cribs: 84x43 cm; for moses baskets: 75x28x11 cm.
(see reference 1)
Click "Buy" next to the type of mattress you want to purchase under either Moses basket or Crib style. You can also add mattress pads and fitted sheets to your purchase. These will fit the curved design of the mattress.
Click on "Checkout" when you are finished adding items to the order. Sign into your Google e-mail account or create a free Google Checkout (and e-mail account) on the Checkout page. SleepCurve uses this service to process orders. Enter your credit card and billing information when prompted. Enter a different shipping address to ship to another location.
Click "Sign In" or "Agree and Continue" for new accounts. Confirm your order on the next page, and click "Submit." Wait for the order to process; do not refresh the page. Check your email for a confirmation email from SleepCurve.