iGadgitz Reflective Anti-Slip Black Sports Jogging Gym Armband for Samsung Galaxy Alpha SM-G850 with Key Slot iGadgitz custom-made running armband for Samsung Galaxy Alpha SM-G850, G850F, G850A, G850T, G850M, G850Y, G850W. Not Suitable for any other Samsung. Please note that this armband will not fit your phone if it is in a case or cover. Produced from superior quality neoprene with reflective 'Jog Safe' banding. Access to headphones and all controls, including full use of touch screen. Secure adjustable armband designed for arms between approx. 24cm and approx. 33cm in circumference. If your arm is bigger than this you may wish to consider purchasing the iGadgitz Armband Extender Strap. Please search for the product by typing iGadgitz Black Neoprene Extender Grip Strap in the search bar above.