Keepgo

Keepgo's killer advantage is the no-expiry model. Buy a plan, use it in Mexico now, then save the remainder for your next trip to Colombia, Costa Rica, or fifty other destinations, without watching a countdown timer drain your credit.

The lifetime validity removes a major frustration with typical travel eSIMs, where unused data vanishes after 30 days. That flexibility matters if you take sporadic trips or like having a backup plan available whenever wanderlust strikes.