eSimfly does not provide an unlimited‑data eSIM for Saint Kitts and Nevis. The only plans listed for that country are fixed data bundles. For example, the “Caribbean Islands Unlimited 7 Days” plan offers 3GB/day for 7 days, with speed reduced to 1000kbps once the daily limit is reached. Other options include 20GB for 30 days, 20GB for 365 days, and 25GB for 30 days, all with fixed validity periods. These fixed‑data plans may be more cost‑effective for most travelers, unless a user expects to consume more data than the bundle allows.