It's the Bass Pro Shops Extreme Qualifier 360 backpack bag. The bottom tackle box compartment zips off and there's a strap that goes underneath the top portion if you don't need the top part. Still looking to make it a bit more rigid, but for right now it's holding up well. The top compartment can probably hold a complete change of clothes, a hot beverage container, and a few extra water bottles, but for now I use it for a sweatshirt and "giveaway" discs. Could probably hold 22 or 24 discs with the top pocket being a putter pocket. Currently holding 4 putters, 4 midrange, and 8 drivers.