Our convertible backpack to tote is crafted from waxed canvas. It is perfect for your large project or as a bag for your day trip. The outer part of the tote is constructed from Halley Stevensons waxed cotton, making it water resistant. It is 15X15, with a zipper top closure, an extra large waxed canvas outside pocket and an inside pocket. It has a 5 inch wide bottom. The waxed canvas only gets softer with use! The outside pocket is constructed from our naturally dyed linen. The inside is canvas. The tote can be carried by the extra long handles as a tote or as a backpack. The handles are woven. All of the hardware is brass.