Extra mass makes itself more known the longer you hold it (e.g. bags of groceries). As the NYT reviewer said: 'My hand didn’t cramp up while grasping the iPad A

Extra mass makes itself more known the longer you hold it (e.g. bags of groceries). As the NYT reviewer said: 'My hand didn’t cramp up while grasping the iPad Air for an hour while watching movies or playing games'.