From Benetton rugby skullies,

from Raekwon (Ft. Ghostface Killah, GZA, Inspectah Deck & Method Man) – House of Flying Daggers Lyrics on Rap Genius

Meaning

Benetton Rugby Treviso are an Italian professional rugby union team based in Treviso and like any other professional team, they sell equipements, shirts with their team colors.

A skully is an optional “hat” that you can wear under your optional helmet, (known as scrum cap)

This line is an enumeration (with the upper line) of what he still have in his closet

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