-The black one: approx9.84"L x 5.51"W x 14.17"H/25cm*14cm*36cm. The gray one: Approx15.6"x12.6" x 5.1" Weight:0.95 lb
-The black one: Three zippered compartments with several small inner pouches. And a pocket on the back, which can be anti-thief and put some valued things to ready to get.Each zipper of the knapsack has a SBS pull on it, so you can easily grip it. Larger zippered compartment can hold Tablet and Ipad(up to 8"), Middle zippered compartment can hold things such as diabetes supplies, phone, purse, keys, MP3, first aid gear, pens/markers, food bars, business cards or so on
-The gray one: Four zippered compartments, the lager compartment can hold your 13" tablet or ipad. Beside, in the waist, there is a small pocket to put your mini things, such as keys, cards.
- IDEAL APPLICATIONS of the SACK: fashion ( bright and vibrant color, cute and good quality), casual (keep your hands free but without the bulk of a regular backpack), outdoor sports (hiking, camping, climbing, running, cycling, bike riding, etc), outings, travel/vacation, trips to the amusement park, baby bag (carry around diapers and wipes) or so on