Simms Freestone Sling Pack - Lightweight Durable Fly Fishing Sling

In this review of the Simms Freestone Sling Pack the bottom line is clear: this is a purpose-built fly fishing sling for anglers who need a tough, organized day pack that stays comfortable on the move. The pack's biggest selling point is its combination of rugged 330D Nylon Ripstop construction with a thoughtfully arranged compression molded workstation, which keeps fly boxes, tools, and a net accessible without weighing you down. This reviewer found it especially useful for long days on the river where weather, frequent bending and quick access to gear matter most.

Key Features

• Durable construction: 330D Nylon Ripstop with a polyurethane backside coating provides weather resistance and abrasion protection so the pack holds up on rocky banks and wet conditions.
• 12L main compartment: A semi-structured compartment with a D-shaped two-way zipper offers easy access and enough volume to carry extra tackle, a rain jacket, or a spare reel.
• Compression molded workstation: Keeps fly boxes and frequently used tools organized and protected while preventing gear from collapsing inside the bag.
• Ergonomic strap system: The shaped shoulder strap with an adjustable sternum strap and tool port distributes load comfortably for all-day wear and gives a secure tool attachment point.
• Integrated net sheath: Built-in net pocket with a D-ring lets anglers leash and stow a landing net within reach without interfering with other pockets.
• Accessory pockets: Multiple zippered stash pockets include a secure pocket with a key clip for small essentials like sunglasses or sunscreen.

Who It's For

The Freestone Sling Pack is ideal for stream and river anglers who want a compact, highly organized bag for day trips. It suits anglers who hike into waters, wade frequently, or need quick access to leaders, tippets, and tools without removing a full backpack. The pack's rugged materials also make it a good choice for mixed-use outdoor days that include hiking or camping.

Anglers who need very large capacity for multi-day trips or photographers who require padded camera compartments should look elsewhere; this design favors low-profile, fast-access storage over heavy-duty travel capacity.

Pros & Cons

Pros

• Rugged 330D Nylon Ripstop and PU coating stand up to wet, abrasive conditions encountered on rivers.
• Compression molded workstation and 12L main compartment keep fly boxes and spare gear organized and protected.
• Integrated net sheath and D-ring let you secure a net without fumbling, improving on-river efficiency.
• Ergonomic, adjustable strap with tool port makes the pack comfortable during long sessions and provides useful attachment points.

Cons

• 12L capacity is limited for multi-day trips or anglers who carry lots of extras; this is primarily a day-use sling.
• No dedicated padded laptop or camera compartment for non-fishing uses.

Specifications

Material	330D Nylon Ripstop with polyurethane backside coating
Capacity	12L
Main compartment	Semi-structured D-shaped two-way zipper
Storage features	Multiple zippered accessory pockets, secure stash pocket with key clip
Carry system	Ergonomic shoulder strap with adjustable sternum strap and tool port
Net storage	Integrated net sheath with D-ring
Extras	Water bottle holder, compression molded workstation

Our Verdict

The Simms Freestone Sling Pack is a smart choice for day anglers who need a durable, well-organized sling that keeps essential tackle and a net within reach. Its robust materials and ergonomic strap make it good value for frequent river use, though those needing large capacity or specialized non-fishing protection should consider other options.

Frequently Asked Questions

Is this pack waterproof?
It is not fully waterproof but the 330D Nylon Ripstop with a polyurethane backside coating offers good weather resistance for rain and spray.

Can it carry a landing net?
Yes, the integrated net sheath and D-ring are designed to secure a landing net for easy access on the water.

Is the strap comfortable for all-day wear?
Yes, the ergonomically shaped shoulder strap with an adjustable sternum strap distributes load and remains comfortable during long fishing sessions.