Choosing a paddle depends on many things like your height, the width of the kayak and also your personal paddling style. REI, Werner and Aqua-Bound each have a good paddle fit guide.
The general rule of thumb is to get a paddle that fits just under your middle knuckle when standing with your hand up. Reach your hand over your head and bend your fingers, as if you were curling your hand over a paddle. Measure from the floor and convert to centimeters.
Check out Aqua-Bound's Kayak Paddle Sizing Guide.
We sell a 4 piece paddle by Aqua-Bound that fit right inside the Bluefin bag!