I don't think I've ever purchased anything from Crate and Barrel, but I'm pretty sure I'll break the trend for one of these Everywhere Rugs for only $32.00 USD.
So states CrateandBarrel.com:
Indoors, outdoors, anywhere at all. Colorful high-performance polypropylene rug is waterproof, reversible and mold- and mildew-resistant. Just rinse clean.
- 100% Polypropylene
- Machine-braided and hand-sewn
- Spot clean or rinse