ITEM NAME:Arm Warmer Bag Short Sleeve Armband Non-slip Phone Case Wrist Pocket for Running Product Description Description: Arm Warmer Bag Short Sleeve Armband Non-slip Sunscreen Mobile Phone Cellphone Case Wrist Pocket for Outdoor Running Night Jogging Sports Fitness Features: 1. Non-slip design: The top of the arm bag is equipped with non-slip silicone to prevent the arm bag from slipping during exercise. 2. Pocket design: There is a pocket under the arm bag, which can be used to hold mobile phones up to 6 inches and some small things you can carry with you. 3. Sweat-wicking and breathable: The use of sweat-wicking and breathable fabrics allows you to feel cold and comfortable. Specifications: Main material: Nylon Colour: Black Size: XXL, XL, L, S Dimensions: 250x135x7mm/9.84*5.31*0.28" (XXL), 240x125x7mm/9.45*4.92*0.28" (XL), 240x110x7mm/9.45*4.33*0.28" (L), 240x100x7mm/9.45*3.94*0.28" (S) Upper arm circumference: 250mm/9.84" (XXL), 235mm/9.25" (XL), 220mm/8.66" (L), 190mm/7.48" (S) Lower arm circumference: 200mm/7.87" (XXL), 190mm/7.48" (XL), 180mm/7.09" (L), 160mm/6.30" (S) Net weight: 33g (XXL), 31g (XL), 29g (L), 28g (S) Function: Store mobile phone keys and other personal items during fitness, running, and cycling Notes: 1. Do not choose arm bags based on the size of clothing. 2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 3. Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X Arm Warmer Bag.Non-slip design: The top of the arm bag is equipped with non-slip silicone to prevent the arm bag from slipping during exercise. Lower arm circumference: 200mm/7.87" (XXL), 190mm/7.48" (XL), 180mm/7.09" (L), 160mm/6.30" (S).