Duffels are rectangular bags with handles and typically a shoulder strap. Duffels are often made of nylon or leather and used for short trips or commonly used as a gym bag.
About Rolling:
Rolling refers to any type of carry-on roller bag or luggage that features propelling rolling wheels underneath for easy transport on many different types of surfaces. Upright rolling bags usually have concealed telescopic handles that can be extended and adjusted to fit the person's height for maximum ergonomic benefit.
