If you don’t see the Overnight shipping option available, it might be due to one of the following reasons:

• Only certain items are eligible for Overnight shipping, so some items in your cart may qualify while others do not. Overnight shipping will only become an option if ALL items in your cart are eligible.
• The shipping address is Alaska, Hawaii, Puerto Rico or a country other than the US. For Overnight shipping, you must be located within the 48 states. 
• You are attempting to ship to a PO Box or military base.