Sending a product
From the products page you can send a product to anyone in SL!
Click on the truck icon at the right side of the desired product.
A window will pop up and there you can type the username of the user you'd like to give the product.
You may also type a message if you with, it will appear in the user's local chat.
Sending to multiple people
You can also send the product to multiple people in one go. Just type multiple usernames separated by commas!