WS Bath Collections Seed bathroom sinks collection is designed by Prospero Rasulo, and is a natural and organically shaped collection of bathroom sinks. With a new concept of thin edges developed through advanced technical and manufacturing research, the Seed Collection offers the thinnest edges in the industry. Avant-garde. WS Bath Collections Seed 45.45.00 Features: WS Bath Collections Seed 45.45.00 Specifications: