Cotton Straps, Buckle closure. Made Of 14oz Stone Washed Cotton Canvas for An Authentic Vintage Look and Feel. Vintage Medic Bag Offers Plenty of Room for Notebooks, Mobile Devices, And/or Small Laptops. Measuring 12 ½" X 11" X 3 ½". Large Compartment with Flap Closure. Flap Closure Features Leather Closing Straps and Medics Cross Symbol. Adjustable Shoulder Strap Can Extend To 46" Long.