Gordon wrote:
So I'm going to a roller furler jib for cruising. What size would be
best?
120, 135,150, etc!
Gordon

It depends on your cruising area, and the times of year you sail.

I'd say the default answer is a 135 but for Chesapeake Bay or LI Sound
in summer cruising, a 150. For San Francisco Bay, 115 or 120...

For offshore cruising, I'd lean towards 135 but without knowing more
about your boat or plans, nobody can offer much advice

Evan Gatehouse