Meet the Mini Besties. All the fun of our original Bestie bottles, now in a compact 6.7 ounce size. These mini water bottles come with a built-in key ring so your Bestie can tag along on your bag, keys, or backpack. Just like the original Besties, each mini features double-wall vacuum insulation and a removable silicone straw. Use your Mini Bestie as a bag charm, an accessory, and of course, for sips on the go.