THE BEST ARMBAND for YOU:This Armband is specially designed for Samsung Galaxy S9 Plus(2018),big enough even you put your Phone with protective case in it.Offering full screen protection and allowing easy access to your phone's touch screen and headphone jack.If For any reason You Do Not Absolutely satisfied with this Armband, Just Return Or Replace It SKIN-FRIENDLY: Made of high-grade Water-Resistant Lycra fabric, soft, stretch,lightweight, sweatproof. The premium fabric is super grasp and it will not fall down your arm even during a intense exercise. FIT FOR MOST ARMS:This Running Armband is Built in two regulating slots to make the armband adjustable fully, and enough to fit all small and larger arms from 9"(23cm) to 14"(36cm), with the extra Extension strap , allows further lengthening of 8.85 inches (22.5cm) if required.