Fieldline Motorcycle Backpack: Packing for All-Weather Rides

Start With the Sissy Bar, Not the Stuff Sack

The Fieldline Motorcycle All-Weather Backpack is built to slide onto a standard motorcycle sissy bar or backrest up to 18 inches tall, so mounting comes before packing. The back straps slide over the bar, and internal and external straps tighten the bag against the backrest. If your bike has a back pad, you may need to remove it first. Once the bag is secure, you can load the 34.9-liter main compartment and top compartment without fighting a loose bag.

This order matters because the bag's shape changes as you fill it. A bag strapped down empty may sit differently once loaded. Mount it first, then pack, then re-tighten the straps so the load stays balanced against the bar.

A Packing Sequence for Rain-Ready Rides

1. Mount and tighten the bag: Slide the back straps onto your sissy bar or backrest, then tighten the internal and external straps. Confirm the bag does not shift before adding weight.
2. Load the heaviest items low and centered: The 34.9-liter capacity and 20.5" x 11.4" x 5.9" dimensions give you a defined space. Keep dense items near the bottom and middle so the bag stays stable against the backrest.
3. Use the top compartment for quick-access gear: The roomy top compartment has a zipper closure, making it a practical spot for gloves, a phone, or a rain shell you may want without unpacking the main bag.
4. Organize small items in the top flap: An accessory organizer on the top flap interior keeps keys, cables, and small tools from sliding around. Two side mesh pockets can hold items you want reachable at a stop.
5. Balance the load with side compression straps: Two side compression straps let you tighten the bag around a partial load. Use them to reduce bulk and keep the bag from swaying.
6. Close with the roll-top and check reflectors: The roll-top closure seals the main compartment. Large reflector accents are built in for night visibility, so make sure they are not covered by loose straps or gear.

What the Fieldline Backpack Gives You to Work With

• Fieldline Motorcycle All Weather Backpack, Black: Cargo capacity: 34.9 liters (2133 cubic inches); dimensions: 20.5" x 11.4" x 5.9" This defines your packing envelope. It is enough for a commute load or a day's ride gear, but not a multi-day touring setup.

  

• Fieldline Motorcycle All Weather Backpack, Black: Made from Weather Defense water-resistant fabric with polyester construction Water-resistant fabric handles changing weather, but it is not a guarantee of waterproof performance. Pack sensitive items in a dry bag or plastic sleeve if rain is steady.
• Fieldline Motorcycle All Weather Backpack, Black: Back straps slide onto a standard motorcycle bar up to 18 inches tall; internal and external straps secure the bag This is the mounting method. Measure your sissy bar height before ordering, and plan to remove a back pad if it interferes.
• Fieldline Motorcycle All Weather Backpack, Black: Large reflector accents for night riding visibility If you commute in low light, keep the reflector panels clear of gear and straps so drivers can see you.

What to Put in a Motorcycle Commute Load

For a daily commute, the 34.9-liter main compartment can hold a change of clothes, a lunch, and a small tool kit. Use the top compartment for items you need at stops, and the top flap organizer for keys, wallet, and phone. Two side mesh pockets are useful for a water bottle or gloves, but they are open mesh, so avoid putting anything valuable there in rain.

If you ride with a laptop, place it flat against the back panel inside the main compartment and use the compression straps to keep it from sliding. The bag does not list a padded laptop sleeve in the supplied information, so add your own sleeve if you need extra protection.

Rain-Ready Setup: Water-Resistant Is Not Waterproof

The Fieldline backpack uses water-resistant fabric, which helps with road spray and light rain. For a waterproof motorcycle backpack setup, treat the bag as one layer of protection, not the only one. Pack electronics, documents, and a spare layer in a roll-top dry bag or sealed pouch inside the main compartment.

The roll-top closure on the main compartment is a good sign for weather resistance, but the supplied information does not confirm a waterproof rating. If you ride through sustained rain, check the bag after your ride and dry it before repacking.

Powersports Gear Bag Tips That Apply Here

• Keep the load symmetrical: Use the two side compression straps evenly. An off-center load can make the bag lean against the sissy bar.
• Leave the reflector panels exposed: The large reflector accents only help if they are visible. Route straps and loose gear away from them.
• Check the bag after mounting: Before every ride, confirm the internal and external straps are tight and the bag has not shifted on the bar.
• Do not rely on the mesh pockets for weather protection: Side mesh pockets are open by design. Use them for gloves or a drink, not for items that need to stay dry.

When This Bag Is the Wrong Choice

The Fieldline backpack is designed around a sissy bar or backrest. If your motorcycle does not have one, or if your bar is taller than 18 inches, this mounting method will not work as described. The bag also has a fixed 34.9-liter capacity, so it is not the right pick for multi-day touring with camping gear. And because the supplied information does not confirm a waterproof rating, riders facing heavy, prolonged rain should plan additional dry storage.

For local rides and commuting, the combination of a roll-top main compartment, top zipper pocket, and compression straps gives you a practical packing system. The lifetime guarantee against defects in workmanship and materials adds confidence, but it does not cover wear from normal use or improper mounting.