Snowbee Rockhopper Boots - otherwise known as 'ninja boots'.
If you aren't into wading or just want a quality pair of wellies with a decent grip over rock and weed - then the rockhoppers are hard to beat.
A relatively light boot designed for shore anglers to assist in scrambling across rockie gullies covered in bladder wrack, where other soles don't grip so well.
The spike sole is designed to cut through a layer of weed to grip the rock below.
The spikes are set in deep rubber cleats, which give the sole a lot of flexibility, moving the studs, rather than leaving them in a fixed position.
Very clever idea, well executed.