they're the same construction as the PEs, which are absolutely bomb. if you hit your skis together a lot, the topsheet will chip, but other than that they've got really thick edges and the thickest/tallest sidewalls i've ever seen, except for maybe some race skis. they're actually thicker (from the base to the topsheet) than my PEs, which is weird. so i can't imagine them losing camber anytime soon or breaking in any way.
they're also 2 cm longer than my PEs too haha, both 179. no idea why.