Pictures 5-7 show how if you tighten the shoulder straps, the extra strap that hangs down on most backpacks is buttoned up so it doesn’t flap around loose. Loved that about this bag. 11"H x 7 ½"W x 4"D. (Interior capacity: small.) • Two-way zip-around closure with rain flap • Holds most electronic tablets • Snap-together top carry handles; adjustable backpack straps • Exterior zip and slip pockets • Vinylon F with Fluorocarbon-free impregnation for water resistance • Vinylal