Can you own too many Birks. Yes if have a pair of Noppyflex sandals. Instruments of pure foot torture as Birkenstock choose to use hard plastic for the foot bed unlike similar
Birkenstock Blue Massage Sandal NOPPY Women Summer shoe Sz 40 260mm | eBay
Kids Birkenstock Roma Sandals - Mocha / Brown - Kids Sz 7-7.5 (Eu 25) | eBay