Yeah it appears they would be in there snug but I think they would work as this thing is big also you can remove and reposition the bottom of this thing that is the dividing floor for the bottom it attaches with Velcro. So moving it down more to give you more interior space for the Big binos is why they did this.Hey @SHTF appreciate your message. I looked online and I could be wrong but it looks like the XR is a little small for the Vortex Kaibabs (8 inches tall). If I am seeing something incorrect, let me know. Still on the hunt for a harness. Thanks