Cage is manufactured from high-grade polycarbonate a light durable and hypoallergenic material. Consists of three parts which fit together perfectly. Two guidance pins connect the top parts and the oval taper pin connects the rings with the cage. A variety of rings in different sizes and distance pieces allow you to create the right size. The rings have a comfortable fit and are safe. A metal lock or tie-wrap lock can easily close the cage. Equipped with a variety of vents and a urination opening. The cage makes it impossible to get an erection. Waterproof. Length is 3.54 in. Outside diameter of adjustable rings is 1.77 1.97 2.17 and 2.36 in.