The best RFID blocking wallets you can buy - Android Authority
ROCO Minimalist Aluminum Slim Wallet RFID Blocking Money, Black, Size Standard at Amazon Men's Clothing store
Wallet for Men - Slim Aluminum Metal Money Clip with 1 Clear Window ID Badge Holder, RFID Blocking, Holds up 15 Cards with Cash Clip.Ultra-Thin Minimalist Wallet, dark grey - Walmart.com