Tom Bihn Synapse 19 backpack Outside color/material: Aubergine ballistic nylon Inside lining color/material: Mountain Grey 210 Cerylon Added accessories: Freudian Slip for Synapse 19, 3 additional zipper pulls, and black  key strap. This back is pre-owned and has 2 stains on the lining. There is blue pen marks in the inside one of the front pockets near the seam and one in the main comparment on the back. Otherwise, it is in excellent condition. It was used as an everyday back and forth work bag for about a year and recently upgraded to the larger size and was not used for outdoor activities (hiking, camping, etc). I am the original owner and purchase the bag directly from Tom Bihn. This backpack is designed with ultimate utility in mind: Main compartment with 2 O-rings Interior, banded open-top pocket 5 exterior front pockets with independent volume Comfortable, durable, edgeless shoulder straps Breathable back panel Removable sternum strap and waist strap Webbing loop on exterior bottom of bag to hook items on the outside Measures approx. 11.4" (w) x 16" (h) x 7.9"