I use the midsize staff bag 90+% of the time. I wouldn't want to carry it. I have it set on an electric pushcart (so I don't even have to push it) and it is perfect for me. Room in one pocket for rainsuit, another for oversized rain hood, one for the balls, a smaller one for tees, another for the valuable, and another for my laser rangefinder. The way it sits on the pushcart is perfect for getting the clubs out, and getting the laser out quickly. Love it

It has been years since I have used a staff bag. I currently use their cart bag and a lightweight for when I travel. The staff bags are not water proof but Titleist makes a waterproof bag in three models. STADRY Waterproof Cart Bag, 4UP STADRY Stand Bag, and STADRY Waterproof Stand Bag. Click on gear and go to bags. Here is a full description of the bag you are interested in.

Midsize Staff Bag

MSRP: $260
Weight: 5.8 Pounds

Description

Textured foam padded vinyl, in combination with lightweight, durable woven polyester, and various material and color overlays give this classic bag a fashionable look. Classic 6-way dividers in the top-cuff provide superior organization and are positioned to optimize balance when carrying. Multiple streamlined accessory pockets and a large fold down apparel pocket provide superior storage capacity while minimizing bulk. This more fashionable and functional body design continues to make this bag popular among professionals and serious players alike.