They've rescued 3 people in the last 4 days.
They're popping up in the middle of supermarket aisles on special offer and can be purchased online very cheaply.
But the RNLI says the inflatable kayaks are "cheap toys are not suitable for our tides, puncture easily & can put your life at risk."
In the last 4 days, 2 Crews rescued 3 people after their inflatable kayaks capsized. The charity says they just happened to be in the right place at the right time to help them and none of them had safety equipment.
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