Saily Ultra is a premium international eSIM service designed for frequent travellers who want mobile data across 121 countries without changing physical SIM cards. WIRED found it straightforward to set up and generally reliable, but judged its $60 monthly Premium tier expensive unless users travel across several countries and make use of its included extras.

The service offers Standard, Plus and Premium plans at $30, $45 and $60 per month respectively; Premium includes 30 GB of unrestricted data before speeds are capped at 1 Mbps. Testing in the UK and Europe produced up to roughly 300 Mbps on urban 5G, though rural 4G speeds were nearer 15 Mbps; the slower allowance remained suitable for messaging and navigation but not video. Perks include airport lounge and fast-track access, NordVPN and other security tools, while country-specific plans may offer better value for short trips.