The maximum sprinting speed for humans underwater is about 3-4 mph, but that’s nothing for a humpback whale, which can achieve speeds of up to 16mph.

Taking its inspiration from those massive underwater mammals, Speedo has unveiled a new set of fins that will give you much more propulsion with less effort.

Speedo is keeping mum on the hydrodynamic aspects of its new design, but the Australian swimming company says the holes and ridges of its fins, called “Nemesis,” can help displace more water when a swimmer kicks.

The fins are also made from a lighter EVA foam, rather than rubber, so they’ll float to the surface if they ever fall off your feet.

Speedo will retail the fins for $40.