Made for 28mm water and soda bottles. Great for Smart Water, 2 liters and similar bottles.

The Swig Rig ULTRALIGHT includes:

• SR28 Cap
  
• Straw (long enough for tall Smart Water bottles)
• Off cuts from the hose can double as a straw.
• Silicone Valve
• Clear, Orange or Clay Hose w/ TruSwig (provides pure tasting water)
• High Flow Bite Valve with Cover
• Hose Quick Disconnect
• Backpack Hose Clip