This Jacket is designed to be compatible with a backpack.  The sleeve is gusseted for the benefit of unrestrained movement.  The front and side pockets are positioned to be accessible when wearing a backpack harness.  This system allows you to always have easy access to your kit, and a full range of arm movement when you need it.

This system will suit bushwalkers, twitchers, and field sports men who rely on a backpack.