PortaPocket Combo Kit, Hands Free Carry Case for Cell Phones & More / Travel Wallet System/ for Fitness/ Walking/ Exercise. Works on Arm / Leg. Pocket Slides off to Work on your own Belt, too. Black PortaPocket Combo Kit is versatile, modular and designed for use on arm, calf or perhaps thigh Detachable pocket has sealable, secure Velcro closure and belt-loop mountings. slides onto the 18" band (included), or use on your own belt, instead Streamlined & lightweight to wear under or over clothing; washable, sweat resistant neoprene Includes 18 inch long adjustable band, and 4 inch by 6.5 inch belt-loop mounted pocket to fit almost any smart phone, passports, more Interchangeable with other PortaPocket components for expanded capability; just search for 'PortaPocket' on amazon!