eSimfly does not provide a truly unlimited data eSIM for Martinique. All of its plans for the island have a fixed data allowance; the plans that carry the word “Unlimited” in their name actually give a daily data amount and reduce speed after that limit is reached.
Travelers who need a large amount of high‑speed data can choose fixed data plans such as the Martinique Unlimited 30 Days plan, which offers 3 GB/day for 30 days, or the O2 Unlimited (International) plan, which provides 35 GB for 30 days. These plans give substantial data allowances but are not unlimited; once the data is used, the speed is throttled to 1000 kbps or the plan expires. This option can be more cost‑effective unless the user requires truly unlimited data.