If you want something way bigger but still ultralight and single-walled, Vargo Bot HD or Vargo BOT XL are like a larger version with a screw top threaded titani

If you want something way bigger but still ultralight and single-walled, Vargo Bot HD or Vargo BOT XL are like a larger version with a screw top threaded titanium lid (uses a silicone o-ring to seal).