If selecting USPS ground advantage and you are located in Hawaii, please be aware of the following: Packages 15.99 oz or less will travel by air (typically 3-5 day transit time). Packages greater than 15.99 oz will travel by ship and will take much longer to arrive (it seems to take a few weeks). If speed is a concern, please upgrade to USPS priority mail, for a transit time of 3 days. Orders over $75 can upgrade to USPS priority mail for $4.99!