How much curve is enough for an X-curve?

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Mar 10, 2020
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I'm getting pretty confident that the Sky 5900 is the next pack I want. I'm having a bit of trouble deciding on the frames. People seem pretty set on their preferences between them. If I understand correct, the choices are Krux Evo, R3 (pretty much the same from what I can find?), and the X-curve.

I have some curve in my back - if I stand flat against the wall, I can fit most of my hand in the mid-lower back area. I'm not sure if that's considered a significant curve or not? I watched the SG video and it seemed to suggest if you're a more casual hunter to get the Evo and only basically pros would need the X-curve. Kind of weird - I just want the one that fits and can't see any other reason why they would suggest that...
 
Mike, that's a great question. In short, we can pretty much comfortably fit everyone in all of the SG frames. In some ways, it comes down to personal preference and your hunting style. One note: All of the SG frames will have the integrated load-shelf capable of carrying 150+ pounds. They are also pretty much constructed of the same materials as well.

The Xcurve frame does fit people well that do have more curve in their backs. We don't have a standard measurement on what "curved" means, but it's been my experience that if you can get most of your hand or fist behind your back when standing flatfooted against a wall, the Xcurve should fit you just fine.

Here are some differences in the Xcurve and EVO that might help you out.

The EVO is our ultralight minimalist frame. It was designed to be as light as possible but still comfortable under heavyweight. When loaded, you can set up the majority of the weight on your hips, but the load is distributed out across your back as well. The EVO is an excellent option for that guy who cuts the handle off his toothbrush to save weight but is also well at home for guys that are primarily day hunting from the truck and are looking to move light and fast.

The Xcurve frame was designed with input from multiple hunting guides in BC and Alaska. It's a real workhorse! The curve in the frame drives weight into your hips and your shoulders, making for a comfortable carry over long extended trips. The belt is also a little stiffer, which some guys prefer. The Xcurve is often chosen most by hunting guides, but lots of folks love the fit. The Xcurve is just slightly heavier in weight than the EVO.

Curious to see what other folks have to say on this topic as well.

Cheers-
Lyle from SG
 
Great answer Lyle. appreciate the detail.

Could you comment on the curved back fit of the Evo? Is it more straight in addition to the minimalist features?
 
Torso length plays into choice as well.....shorter torso and the tops of the stays may be close to the back of your head..

BTW, I am 6' and have a short torso....
 
@Hunter Mike I own both frames and have a back similar to yours. The EVO frame fits well and is comfortable under load but IMO the X-curve handles heavier loads while maintaining comfort. Some of it is the shape loading the back in a more efficient manner but the stiffer belt-to-frame interface helps a ton. I think either frame would work for you but the optimal one would depend on your intended use. One nice thing about either of these are the ability to customize the foam in the lumbar pad for a fit that works for you specific back profile.
-Josh
 
Great answer Lyle. appreciate the detail.

Could you comment on the curved back fit of the Evo? Is it more straight in addition to the minimalist features?
Great answer Lyle. appreciate the detail.

Could you comment on the curved back fit of the Evo? Is it more straight in addition to the minimalist features?

The EVO frame is a flat style frame sheet.
 
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