Very thin walls. Down to 0.35mm, so liable to be dented. I'm not convinced that Life tubing, which goes down to 0.4mm, is any less likely to be dented in real life. Either way it's wafferthin.
Just realized this is not the functional thread haha!
But yes, spirit is supposedly thinner than life.
I can compare with my colossi rambler cx with zona tubing, the delight is lighter and sounds thin.
Looks like they use the same tube set as on my delight Road frame,which is spirit hss, maybe ask them to change to a more "functional" life tubing.
Cheers,
Dave