SIMMS TRIBUTARY SLING PACK SF21 Stash gear in two cargo

Stash gear in two cargo top load pockets to stay on the water until last light

While still able to deliver the power and responsiveness needed to progress quickly

Carabiner finger loop

Whether laying down dry flies with finesse or delivering streamers to distant reaches

how to tie some super effective top water bass flies

SIMMS TRIBUTARY SLING PACK SF21 Stash gear in two cargoUpdated for 2026 with highly water resistant and super durable materials, plus a refined shape and increased capacity for an easy wearing, easy to use, over the shoulder storage solution. Key Details Durable and water resistant 630 Denier High Density Oxford Nylon fabric with TPU coated frontside and PU coated backside YKK zippered front drop tray storage with internal and external Velcro fly patch locations plus two internal drop in mesh pockets