Flexiroam

Flexiroam, backed by Australian telecom experience, puts a focus on value and flexibility. It sells refillable data bundles covering over 100 countries, and with some plans, unused data doesn't disappear when your service ends.

This rollover feature is rare among eSIM providers and appeals to travelers who hate wasting paid-for data. It's a solid choice for people doing multiple shorter trips rather than one long journey abroad.