The T-Reign ProCase is a Rugged Kevlar tether that reaches up to 36 . Robust stainless steel spring that provides a retraction force of 6 ounces. Hook and Loop universal strap and belt attachment. Weather and impact resistant, rigid thermoformed body, covered in durable 600 denier nylon. Interior dimensions are as follows. Small: 4.5"H x 2.25"W x 1"D - ideal for a small "point and shoot" camera or a GPS; Medium: 5"H x 2.5"W x .75"D - perfect for a smart phone; Large: 5.5"H x 2.75"W x 1"D - made for a large "point and shoot" camera or a small camcorder or rangefinder.