This ultralight shoulder bag from Montbell is ready to deploy as soon as you set your pack down. It's super handy for zero days around town or any time you don't want to haul your backpack or luggage around. At 23g (0.8 oz) it disappears inside your pack when you're ready to hit the trail again, and doubles as a handy pack organizer for small items. Stuffs down quickly into its own pocket for stowage. Measures 5.3 x 7.5 x 1.4 in and has a nominal volume of 0.7 L.