1. Rubbing fastness: The rubbing fastness refers to the degree of discoloration of the dyed fabric after rubbing, and it can be all dry friction and wet friction. The rubbing fastness is based on the degree of white cloth staining. It is divided into 5 grades. The larger the value, the better the rubbing fastness. 2. Light fastness: Light fastness refers to the degree to which a colored fabric is discolored by sunlight. The test method is to compare the fading degree of the sample after the sunlight exposure to the standard color sample, and divide it into 8 grades, 8 grades are the best scores, and grade 1 is the worst grade. Fabrics with poor light fastness should not be exposed to sunlight for a long time, and should be placed in a ventilated place to dry. 3. Sublimation fastness: refers to the degree of sublimation phenomenon of dyed fabrics during storage. The dyeing fastness of normal fabrics is generally required to reach 3-4 to meet the needs of wearing. 4. Washing fastness: Washing or soaping fastness refers to the degree of color change of the dyed fabric after washing with washing liquid. Gray graded sample cards are usually used as the evaluation standard, that is, the color difference after fading of the sample and the sample is used for evaluation. Washing fastness is divided into 5 grades, 5 grades are the best, and grade 1 is the worst. The fabric with poor washing fastness should be dry-cleaned. If wet washing, it is necessary to pay more attention to the washing conditions, such as the washing temperature should not be too high, and the time should not be too long. 5. Perspiration fastness: Perspiration fastness refers to the degree of discoloration after dyeing the fabric with a small amount of sweat. 6. Ironing fastness: refers to the degree of discoloration or fading of the dyed fabric during ironing. A sports hat or outdoor hat originally designed for use in sports, it can be a type of baseball cap or sun visor, now commonly seen at beaches and sports events for those who want to shield their eyes and face from the sun. Whilst players want their eyes shaded from the sun, they don`t want their head to overheat and therefore most caps in sports are made from lightweight and comfortable material such as polyester, cotton and mesh. And many sports caps have no additional support behind those front panels, it is the same all the way around the cap crown. We call it unstructured hat. Sports Cap,Baseball Cap,Running Hat,Fitted Baseball Caps Shandong Urelia International Co., Ltd. , https://www.ureliacn.com