JetBlue's Airways Baggage Allowance Policy
All checked baggage must weigh 50 pounds (23 kilograms) or less; Mint class customers can have a maximum weight of 70 pounds (32 kilograms) for routes within the US, Latin America and the Caribbean. Passengers can reserve up to 2 bags in advance (up to 24 hours before departure). Subsequent suitcases can only be added at the airport.
https://sbsconnect.nyc.gov/for....ums/general-discussi