Convert Art products have 5 processing steps to keep them from smelling and discolor. They are manufactured to be durable without needing special care. They are waterproof and their non-porous surface helps clean them easily. You can clean your bag with a cloth and some warm water and soap, or wash it in the dishwasher up to 40oC, using a mild detergent. Do not put your bag in the dryer.
In very hot conditions (such as a locked car sitting in the sun for over 20 hours), you may see a gray-white surface developing over your bag. The gray color that you might see comes from the wax in the rubber composition. The wax is not harmful and your bag will return to its natural color as soon as it is away from its long exposure to high temperatures.