You are looking at a nice Alpenlite internal frame pack. Alpinlite, I believe originated in Claremont, California and plenty examples of earlier goods can be found bearing that city name under their mountainous logo. Based on this design and the city of Ventura, I would guess it’s a later label circa late 70s or 80s. Similar to some JanSport packs this Alpenlite maintains a day pack type look and feel, in a larger reinforced package.
This pack has an interesting ‘X’ braced frame structure and suspended strap rigging. Pack construction consists of one large main compartment, two side canister type pockets, one front pocket on the flap of the main compartment, and a small top pocket above the shoulder straps. I added the red lashings I had lying around and they will come with it. My guess is the original would have been yellow like that of the loop. It’s a little hard to tell in the photos but the bottom is khaki, loop is yellow which make for a nice color combo. Leather lashings top and bottom with the metal D rings on the front. padded waist strap as well.