If you're looking for a little extra stimulation to add some endurance, as well as a great external stimulation then the Pretty Love Vibrating Penis Sleeve IV gives you just what you need.  Simply slide the first cock ring onto his manhood, and wrap the lower ring around his balls.  The bottom swinging weight will tap both him and her in rhythm during penetration, adding a little pull on his cock.
Designed with a top clit tickler for her connected to a strong bullet providing ten vibration settings, this super soft silicone enhancer is sure to help him endure and her explode!  Insert a single AAA battery, lube up with a favorite water-based lubricant, and dive in. The waterproof design lets you play in the shower, tub or spa, and is easy to clean.

• 10 functions of vibration
• Silicone
• 1 AAA battery not included
• Waterproof