“Max Weight: 250 lbs. (each; so 500 lbs. together)”
Sorry, but still only 250 lbs, it’s not additive.
That’s what it says on the Twisted Root page.
There’s a pretty interesting discussion of this in a previous discussion thread.
Nice straps. I like that they are very long for access to wider trees and fatter trees. I’ve used it4 or 5 times since I got it from woot and so far, so good. Hopefully the quality is solid and these hold up well because they are a screaming deal for good straps.