Amazon.com: [Gigastone] Micro SD Card 32GB, Gaming Plus, MicroSDHC Memory Card for Nintendo-Switch, Smartpone, Roku, Full HD Video Recording, UHS-I U1 A1 Class 10, up to 90MB/s, with MicroSD to SD Adapter :
micro sd to sd adapter - Walmart.com
Best SD cards for Switch - store more games | TechRadar