According to this PDF. Cat 7 is composite and Cat 5 is Fibreglass.
https://acrobat.adobe.com/link/track?uri=urn%3Aaaid%3Ascds%3AUS%3A85882b7e-1b8b-3288-a9dd-53243a6c6bf2#pageNum=11
@xfrost11 see if you can find a tongue with little to no stiffness to it. The boots are so stiff that any stiffness in the tongue can become inhibiting to your forward flex.
My favourite tongue in my MLX is an 80’s felt, leather, and nylon that isn’t stiff at all. The first time I skated in my MLX with those was an eye-opener.
Good riddance, I say. More specifically, to the aesthetically-limiting collars, weird-ass shoulder dimples, and their tawdry, overpriced Indo-authentics.
Thanks for coming to the party, Adidas. Leave the wine bottle you brought and piss off.