If your strap-on harness suffers from slippage when paired with your favourite dildo, then the Sport Sheets - Rubber O-Ring 4 Pack may be just what you need. 

Not only are these Sport Sheets - Rubber O-Ring 4 perfect for strap-ons but they can also be used as a cock ring to elevate performance and intimate encounters. With restricted blood-flow, your erection will become harder, more sensitive and longer-lasting than ever before.

The Sport Sheets - Rubber O-Ring 4 key features are:

• Set of 4 multi-purpose rings
• Help secure dong in strap-on
• Can be used as a cockring to enhance performance 
• Comfortable, stretchy rings
• Phthalate-free

Size

• Small ring diameter -  3.25cm / 1.25"
• Medium ring diameter -  3.75cm / 1.5"
• Large ring diameter - 4.5cm / 1.75" 
• Extra Large ring diameter - 5cm / 2"

 Material

• Rubber