The GreatShield universal armband is perfect for exercise or use during sports. It is precisely engineered to fit your Galaxy device perfectly with a secure hold. It features a long, adjustable velcro strap for easy adjustment, superior fit and comfort. The lightweight, breathable neoprene is water-resistant and washable. There is also a key slot so you have somehwere to hold your keys while working out. It fits snug against your arm for full protection against moisture without adding extra bulk. Your device will still fit with most slim cases. The clear plastic screen allows full touch screen operation. This is the perfect armband for those who are looking for a secure and snug fit along with superb protection.