Lava shorts
I bought these at IM Arizona in 2015 so have owned them for three years. They are made from strong durable neoprene (stronger than the 2 pairs of zone 3 and the Decathlon Buoyancy shorts I’ve previously owned. I use them in my endless pool and they help elevate my legs but (unlike a pull buoy) still allow me to kick. They’re longer than the ‘shorts’ from other manufacturers and extend down to just above my knees.