Ubigi does not provide an unlimited data eSIM for Martinique. The available offerings are fixed‑data plans with specified caps: for example, the BEST WORLD plan supplies 200GB of data for 360 days, while a lower‑tier BEST WORLD offers 100GB for the same period, and the BEST CARIBBEAN plan gives 60GB for 30 days. These bundles can be purchased in advance for a set validity, and once the allocated data is consumed the speed may be reduced under a fair‑usage policy. Choosing a fixed‑data plan can be more cost‑effective for most travelers, especially if their data needs are substantial but do not reach unlimited levels.