Simms Tributary Hip Pack vestpacks Match the size and type

Match the size and type of flies you use to the release tube size

The Grand Slam’s tri-color construction (Horizon tip / Sand head / Yellow running line) makes the tip immediately identifiable by color

our comfortable and durable Yulex® Wading Socks with Gravel Guard are made with 85% natural rubber and 15% synthetic rubber by polymer content

Powerflex tippet has a high knot and tensile strength

51lb strongest in test

Simms Tributary Hip Pack vestpacks Match the size and typeUpdated for 2026 with increased storage and improved water resistance. The Tributary Hip Pack is an easy wearing, go anywhere storage solution that's ready to fish anytime. Features Durable and water resistant 630 Denier High DensityOxford Nylon fabric with TPU coated frontside and PU coated backside YKK zippered front drop tray storage with external Velcro fly patch location plus one internal drop in mesh pocket Large capacity YKK zippered main