This Italian confection is made of "Electrostatic Powder Coat Cast Aluminum" - white or black - but comes with a soft leather seat. I saw it originally in this pic from Blueprint (RIP) and loved the contrast between hard metal edge and girly cute shape. Pricey. The link here is to the British Conran site, because the US site is all funky right now, BUT you should be able to buy it through the US store (online and off) as soon at they fix their site.
BTW rug is by Barber & Osgerby.