Protects your 20oz/595ml Ceramic Reusable Bottle and all Reusable Cups from dings and little scratches! Plus, there's a designated slot for your Apple AirTag® or Tile®, so you’ll never leave your bottle behind again.* Also available in ‘Small’ for 20oz/595ml Ceramic Reusable Bottles and all Ceramic Reusable Cups (except Ceramic Coffee Cup with Hinged Lid) Made with durable silicone material. Also available in Large for 34oz/1L Ceramic Reusable Bottles. Available in our all-new Glow in the dark colours Star Glow, Solar Glow and Aurora Glow Bumpers: For best results, place your bumper in direct sunlight for around 30 minutes to help it charge — it’s the most effective way to activate the glow. Indoor light can work too, but results may be softer!