This is just a helpful piece of kit. I stash it in the bottom and use it as an extra storage bag. It is so solid when I use it between the batwings. Love the flexibility it adds.

So Versatile. Perfect little weekend bag. Sometimes I'll zip the Batwings onto the bottom and turn it into a long weekend bag. Haven't hunted with it but the thought of being able to zip it to my F1 Mainframe excites me.

Nice roomy duffel with a good shape, strong strap and nice capacity.
I like that there’s no handles on the bag. It works for my set up as I zip it into the J79 sky crane ILO the Little Brother pack.
The only thing I would change is the zippers stick out off the bag more than I think they need to. It would be better if they were tucked in tighter to bag.

Loved it! I went on a five day hunt it held every thing but the kitchen sink !

Durable and rugged duffle. I use it for the main pocket of my warhammer pack and it provides so much space on the pack.

Was surprised how much stuff it held. Without busting the zipper or seams.

The super spike duffel was perfect for my 5 day hunt. Plenty of room for everything I took with me.

Great addition to the JustOne pack. I'm new to Eberlestock but so far the two packs I've purchased and several accessories have all be very high quality. The quality of the products is much nicer than I was expecting. Top shelf gear!

I would give it 5 stars if I could match the pattern on my Just One Pack (Hide Open Western Slope). The mirage is the closest I could get to it, but the Western Slope is the best for Nevada.

Love the bag, fits everything i need for an overnight camp and zips onto my JUSTONE so i can drop the overnight gear and keep hiking!