Buy S'well - Traveller Stone Collection 470ml Onyx - Water Bottles (Black) at THE ICONIC with Free overnight delivery and Free returns! The S'well Traveller Stone Collection 470ml Onyx combines function, environmental consciousness, and style in one with new designs released every season, all while doing the environment a favour by minimising use of plastic bottles.- 470ml capacity- 18/8 double-walled stainless steel- Non-toxic, non-leaching & BPA free- Mouth is wide enough for ice cubes