Our Harrods model with 3 flap pockets (2 hip and one "ticket" pocket) plus welt breast pocket, side vents, and 2 buttons, here in a fabric that will take you from April to ...November, December, all year round if you live in a slightly warmer climate.  The ultimate gentleman's sportcoat, its a 50% lightweight British wool, 50% best-quality linen, for a 3-season wear and of course, all the traditional 
Crittenden comfort and special features.  Woven in England, made in Portugal.