This innovative water bottle compresses down to just 10% of its full size, making it perfect for packing in your carry-on or pocket. The medical grade silicone construction is non-toxic, odorless, tasteless, and eco-friendly, while the 100% BPA-free design makes it safe to use. The retainer band keeps the bottle compact, and the metal fastener clips onto backpacks, belt loops, or keychains for easy carrying. The 500ml (17oz) capacity is perfect for daily activities, work, school, yoga, or the gym. So ditch those bulky water bottles and make life easier with the Biaggi Roll Up Space Saving Travel Bottle.