Strap For Google Fitbit Air Bicep Band 50/43CM Nylon Arm Bands

【2 Size Options: 430mm / 500mm】Available in two extended sizes to fit different arm and ankle needs. Small size total length is about 430mm, and large size total length is about 500mm. Please measure your upper arm or ankle before choosing. 【Compatible for Fitness Tracker】This extended arm ankle band is designed for fitness tracker. A practical replacement strap for users who prefer wearing the tracker on the upper arm or ankle during sports. Tracker not included. 【Extended Size, Not for Wrist Wear】This is a longer sport band made for biceps and ankles only, not a regular wristband. Great for workout, running, gym training, cycling, walking, and fitness tracking when wrist wear is not preferred. 【Soft Breathable Nylon Sport Strap】Made of lightweight nylon fabric, soft, flexible, and breathable for long-time wear. A comfortable armband, bicep band, ankle band, or sport replacement strap for men and women. 【Adjustable Hook & Closure】The easy hook and design allows quick adjustment for a secure and comfortable fit. It stays in place during movement and is easy to put on or take off before and after exercise.