When you're out in the rain you have to keep your gear on lock. Our Urban Ex Rolltop 18L is made for your commute, weekend trip or to stuff inside your big bag for a "go" bag when traveling. This backpack features a padded laptop sleeve, an improved shoulder harness design that's more comfortable and adaptable than any bag we've made before, and welded seams to keep the water out. Urban Ex bags are the the toughest, most resilient bags you'll ever own. Guaranteed for life.