Hinoki, or Japanese Cypress, is naturally an antibacterial material, making it a fitting material for a bath mat. It is also highly resistant to humidity. The wood is also used to build traditional Japanese temples, shrines, and palaces.
The mat is slightly elevated above floor level on slats. It'll lend a warm and natrual touch to the bathroom. We love it on the slate tiles shown in the photo.
The large mat, at about 24" x 14", is $55 and the small, at about 18" x 14", costs $39.