Size Guide
The size of the bags (6ft – 11ft) indicates the maximum length surfboard the bag will fit. The actual bag length is a little longer (around 4in) to allow you to roll up the bottom. The actual width of the bags is a little wider (around 2in) than the maximum width surfboard it will fit to accommodate the thickness of the board. Point bags are narrower, while hybrid and round bags are wider.
A few sizing tips
If you have a few different boards, consider getting a bag that will fit the biggest board you have. The roll-up bottom will allow you to snuggly fit smaller boards into a bigger bag.
Before you get a bag for a specific length, double check that the bag will accommodate the width of the board. If it could be tight, consider getting a wider bag (hybrid or round) or size up in length.
The bags allow for boards that are around 2" thick. If you have a board with a lot of volume, you might need to size up.