Geekria Shield Headphones Case Compatible with Sennheiser HD 599, HD 598, HD 560S, HD 559, HD 558, HD 555, HD 400 Pro Case, Replacement Hard Shell Travel Carrying Bag with Cable Storage (PU Brown) - Walmart.com
Replacement HD598 cable Review - YouTube
EveryMarket
Dekoni Choice Leather replacement earpads for the Sennheiser HD59X Series