This is the Mister B Leather Triple Cockstrap with Pin Prick, adjustable with snap studs. The long strap is meant to go behind your balls, gripping both your dick and balls together. The two shorter straps of this Mister B Triple Cockstrap are for around the penis and the balls.
This leather cockstrap features short sharp pins pricking through the lining on the inside for extra stimulation. These pins prick the skin, but are too short to break it.
Depending on what setting you put it, the resulting inner diameter of this cockstrap varies between approximately 40 and 50 mm, ensuring a nice snug fit around your dick.
Having this cockstrap around your dick and balls will lead to longer and harder erections which you (and / or your partner) will enjoy.
Also available in a plain version without pin prick, and one with wider secondary straps, or in a titillating version with pin prick.