At just under 100g this gsi infinity backpacker mug is an unimaginably lightweight insulated mug that is made from 100 recyclable plastics with an insulated sleeve and a webbed handle ideal for being able to keep your hot beverages hot when enjoying a long days backpacking the infinity backpacker mug has a removable lid that also helps to keep the heat inside the mug it is easy to open by flipping the small sip section back and popping it firmly into place making this a fantastic mug that at jus