It is a faux leather tote bag. Since the material is very soft, it fits easily and conforms well. It's large, so I think it can be used for commuting or school. You can also fit cardigans or outerwear for temperature control, and you can carry bullet points or laptops. The inside is made of a fluffy urethane-like material, giving it a soft texture. There is a mesh cylindrical storage space to prevent plastic bottles from falling over, which is a clever design!!