["Large Storage Capacity: The running phone sleeve for phone has ample space to accommodate one key one 6.9 phone an ID card earbud and coins/paper money.We also leave holes for earphone cord." "Size to Choose: the sports arm bands adopt elastic design we have S(<7 inches) M(7-10 inches) L(10-14 inches) XL(14-18 inches) suitable for most peoples arms. If you are not sure which size to choose choose one size larger." Elastic Band and Non-Slip Design: Stretchable elastic band ensures a secure fit around your arm minimizing slippage even during intense physical activities like running. Lightweight and Breathable Material: Crafted from lightweight breathable fabric this phone carrier features a sealed zipper storage space. The easy pull-on/off zipper ensures easy access without slipping during vigorous runs. Suitable for Various Phone Models and Activities: Compatible with iPhone models (Pro Max/Pro/Plus/Mini/SE/S/S Plus) and Galaxy series (Ultra/S/Z/A/Plus/Edge/Note). Ideal for jogging working out hiking or any activity where you need to keep your hands free.]