This unisex bondage collar with nipple clamps comes with a 100g weight attached on a pulley system. When the tension is altered it will effectively double the weight experienced to 200g. The buckle fastening bondage collar is 1 inch wide and can be adjusted between a neck circumference of 13 and 18 inches. The metal nipple clamps are fully adjustable and come with coated plastic ends making them less harsh on the skin. Available in Black as shown.