The Fishpond Delta Sling Pack is a large-capacity bag that combines the features of a sling and a waist pack with a unique (and very comfortable) storage solution.

Organization
Shaped like a bicycle messenger bag, the Delta holds a lot—effectively. Even when it’s overstuffed with fly boxes, jackets, and snacks, the pockets’ zippers still function smoothly and allow for easy access to gear. It’s not loaded with pockets (there are 6 total, including the two main zippered compartments) but it does offer smart, functional storage for key items (like a water bottle). It holds a landing net (including long-handled models) by sliding it into a sleeve between the pack and the mesh backpanel. When you swing the pack around to your chest to access your gear, the net tucks nicely under your arm and doesn’t get in your way while sorting through pockets. The sleeve also keeps the net in a convenient position for landing a fish. The tippet storage is also right where our testers wanted it—front and center on the pack. However, the Delta doesn’t come with a tippet holder (you have to rig up your own cord and clips, or buy Fishpond’s tippet holder for $9). 

Comfort
The comfort of the Fishpond Delta Sling Pack is supreme. The wide strap effectively distributes a heavy load, and the pack stays positioned well away from casting movements.

Adjustability
This is a big pack and requires a big body to wear it comfortably. Among our testers, the 5’11” angler weighing 190 pounds found it just right. 

Ventilation
The Fishpond Delta Sling Pack sits on your hip instead of directly on your back, which we really appreciated in hot weather. The meshy backpanel offered enough ventilation for daylong wear.

Water-resistance
The pack rides rather low on the body (at the low hip/upper thigh), so it drags in deeper water. And the fabric is not waterproof, meaning that soaked fly boxes, etc. had to be spread out and dried at the end of each day. The pack itself took about 24 hours to dry when left in a shaded, breezy spot.

Capacity
This pack is big. Fly-fishing guides found it ideal for a full day with clients. The large storage capacity also makes it ideal for anglers who switch between nymph, streamer, and dry fly rigs all in the same day, and need carry options for all.