Belkin Sport-Fit Plus Armband for iPhone 

Ideal for joggers and athletes who need smartphone access during workouts, the Belkin Sport-Fit Plus Armband lets you wear your iPhone in comfort while you exercise. Made from a breathable, hand-washable material, this armband fits snugly around your arm and has an adjustable strap that you can use to find a comfortable fit. It keeps your device out of the way while also protecting it, so you can focus on your workout and not your phone.

Adjustable Armband Keeps Your iPhone Secure

The Belkin Sport-Fit Plus Armband is designed to sit securely on your arm as you exercise. Using the adjustable strap, you can easily find the fit that's right for you. The armband's closure holds it firmly in place, so you can run, jump, and climb without having to worry about the safety of your iPhone 

Stretchy, Breathable Material for a Comfortable Fit

The Belkin Sport-Fit Plus Armband is constructed from a breathable neoprene material that is comfortable to wear. Its stretchy design adjusts to your body as you move, so you won't feel constrained during exercise. And since it's hand-washable, the armband is easy to keep fresh for the next workout session.

Reflective Accents Help Keep You Visible

Ideal for exercising at night, the Belkin Sport-Fit Plus Armband helps you stay visible while you exercise. The armband features fabric accents that reflect light, so you can jog and bike in greater safety.

Full Access to Touchscreen

The Belkin Sport-Fit Plus Armband protects your phone without limiting access.The armband's translucent screen protector allows easy access to your iPhone  touchscreen.

please note this case is originally for the iphone 6 plus model but fits the iphone 12 with any issues