This cockring is full of surprises with its adjustable quick release tab and seventeen different size adjustments. You never have to worry about this ring not fitting. Just change the tab, so it truly is one size fits all.The ball rope works in combination with the ball guide to allow easy adjusting of the ring while in use. The two inch increments are designed so that every man can get the perfect fitting ring. Combined with a quick release tab, this product is ideal for first timers and individuals who are looking for an easy to use ring. The Speed Shift is safe with all lubes.