The Tri-Star is a three-way carry travel bag designed with the super organized, minimalist business traveler in mind. 3 main compartments of equal size and 9 O-rings 4 exterior pockets in the front panel Carry as a briefcase, backpack, or shoulder bag Personal item carry-on friendly for most airlines DIMENSIONS 18.9" (w) x 13" (h) x 8.1" (d) / 480 (w) x 330 (h) x 205 (d) mm WEIGHT 1050d high tenacity ballistic nylon: 3 lb 6 oz / 1525 grams 525d high tenacity ballistic nylon: 3 lb 2.5 oz / 1433 grams 400d Halcyon®/420d nylon ripstop: 2 lb 12 oz / 1255 grams VOLUME 33 Liters / 2000 cu. in. (ASTM Standard Measure) This bag is in great, clean condition. It was used once.