O'Neill Heat 5mm round toe boots. As the name suggests, a really warm pair of boots due to the 5mm neoprene thats glued, blind stitched then internally tapped. Held in place using a strap over the foot plus a 2nd to close the top of the boot. Thick sole reinforced up the side to help stop foot roll. Strap at the rear to aid fitting them.
Overall a really warm boot that locks in place well, ideal for many different watersports.