Our motorcycle pants are all durable material products. All models come with pockets that will hold armor in place in the knee zone. Scoyco brand comes with the armor that can be inserted in the knee area. Dainese does not come with armor. Armor can be purchased separately at our shop for the models that do not include armor or to upgrade the armor in the ones that do come with armor. Sizes listed are what we have at the moment but for most of the pants, we can get other sizes fairly soon if you wish to order a specific size.