Surface Fabric   100% Cotton Lining   Nylon / Strap   Artificial LeatherWater Repellent Coating1 Inside pocketThe cuboid tote bag was made with 100% cotton  using a special eco-friendly stage 1 waterproof treatment  The interior of the bag is protected from snow  rain  and other liquids  Magnets were not used and therefore it is safe to carry notebooks  smartphones  and other electronics inside this product  The interior of the bag is made from N100 fabric  which is highly wear-resistant  The fly front inner pockets are designed for your convenience  [Washing Instructions] You may hand wash but it is not recommended for this material  You may hand wash gently with a soft detergent  It is recommended that you only clean the area of the stain with a wet washcloth