NiftySIM does not provide an unlimited data eSIM for the Isle of Man. All of its plans for that destination have a fixed data cap, the largest being 50GB for 180 days.
Travelers who need more data can choose from the available fixed data plans. For example, the 50GB 180‑day plan offers a large allowance for a longer period, while the 20GB 30‑day plan gives a smaller, shorter‑term option. Fixed data plans can be more cost‑effective for most users unless they are extremely heavy data consumers.