Feature:1. 1. Size details: Sports Armband measures 5.9 x 4.9 inches; please measure your bicep circumference (unbent) to ensure a fit; suitable arm circumference is 27-33cm/10.7-13 inches.2. 2. Elastic and comfortable: The armband mobile phone holder is made of elastic material, which is light and comfortable, quick-drying, absorbent and elastic.3. 3. Easy to wear: It is easy to wear on the hand, and can be easily inserted into the mobile phone so that you can not feel its existence when you are exercising, bringing you a good experience.4. 4. Multifunctional pocket: This phone armband has side pockets, which are convenient for you to carry small things with you, such as keys, key cards, or other necessary small items.5. 5. Anti-slip reflective design: The inner side of the universal phone arm case is designed with anti-slip glue, it will not come loose even with big movements, suitable for travel, daily sports and hiking; the reflective design will make you visible at night and keep you safe.Specification:Name: arm bagSize: LWeight: about 30g/pcMaterial: milk silkPacking: transparent zipper bagFunction: can be installed mobile phone, bank card, change, and other small items. Elastic and breathable.Package List:1*Arm BagNote:Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.