Penis Compatible

  • Deuce Harness Deuce Harness Quick View
    Deuce Harness

    SpareParts HardWear

    Deuce Harness

    $ 139.99

    The SpareParts Deuce is a jock-style strap-on harness designed to accommodate a penis and testicles. It features a soft fabric front pouch with two O-rings sewn in; the upper ring harnesses a dildo securely against the pubic bone area, while the wearer's penis can sit comfortably inside the pouch or extend through the soft lower ring for access during play. The Deuce is wearable with or without an erection, making it perfect for double penetration with a dildo and penis or simply for penetrative play with a dildo regardless of ability to maintain or achieve an erection. Made of a sturdy yet breathable nylon/spandex blend, this harness is comfortable, rugged enough for the most enthusiastic strap-on play, and machine washable for years of enjoyment.

    Be sure to check the sizing chart, as the Deuce and the Deuce Magnum offer different lower ring sizes to best accommodate the wearer's natural girth. Additionally, the Deuce and the Deuce Magnum are each available in two sizes of adjustable waist belt and leg straps to fit a wide variety of bodies.


    Material(s): 77% Nylon / 23% Spandex fabric. Velcro and elastic straps.

    Manufacturer: SpareParts HardWear

    Manufacturer Warranty: 1 year

    Country of Origin: Designed and manufactured in USA


    From the Manufacturer:

    Which size Deuce™ is for you? Start with measuring for the perfect fit.
    For Deuce™ you will need to consider Belt measurements (hips), Leg measurements (thighs) and penis measurement (girth only) to determine which Deuce™ will produce the best fit for you, or your partner.

    SIZE A or SIZE B:

    Follow these simple steps to determine which Deuce™ product will fit you perfectly!
    To determine if you or your partner is a size A or B, you will need to consider both the Belt and Leg strap measurements.

    Wrap measuring tape around your hips, where you would wear your belt.  Take the number where the tape measure completes and crosses over itself.  You should add a few (3-4) inches to this measurement for size fluctuation and room for sizing adjustment.  Take the measurement and see size chart above for Belt and determine which belt would be best.  

    (You should be able to select a size that is reflective of your pant or belt size.  So if you wear a size 32 in pants, and they fit you securely, you should select the Deuce™ that best fits 32 inches).


    1. To measure which size is best for the wearer; first figure out where you will be wearing it on your hips.  The best way to do this is to put on a regular belt, as this will help you to have a place to start and finish measurement on the next step.
    2. Next take the tape measure and start by taking the end of it and holding it in the center of the belt (in line with your belly button).  
    Slide the measuring tape between your legs.  Select which leg you want to use for measuring and wrap the measuring tape taught around the back of that leg (around the butt check) and then bring it back around to the front back to the center of the belt where you started the measurement.
    In essence you should have the measuring tape wrapped fully around one of your legs tautly (but not so tight it restricts blood flow) with the start and end point of the measuring tape being the front center of your belt.
    Take the leg strap measurement, and then subtract 15 inches, this should give you the length of leg strap you need for the harness to fit securely but still be comfortable. 


    To determine if you or your partner requires a Deuce™ or Deuce Magnum™ product you will need to consider penis girth measurement.

    Wrap the tape measure around the base of the penis one complete time, and where the tape measure crosses over it self, take the measurement and see size chart above for Circumference of Second Hole Opening (For Penis). Keep in mind any size changes that may occur when penis is erect vs. non-erect.


    Deuce Size A
    Belt: 20 - 50 in.
    Leg straps: 10 -16 in.
    Upper hole diameter: 1.25 - 2 in.
    Lower hole diameter: 1.5 - 1.87 in.


    Deuce Size B
    Belt: 35 - 65 in.
    Leg straps: 14 - 24 in.
    Upper hole diameter: 1.25 - 2 in.
    Lower hole diameter: 1.5 - 1.87 in.


    Deuce Magnum Size A
    Belt: 20 - 50 in.
    Leg straps: 10 - 16 in.
    Upper hole diameter: 1.25 - 2 in.
    Lower hole diameter: 2 - 2.375 in.


    Deuce Magnum Size B
    Belt: 35 - 65 in.
    Leg straps: 14 - 24 in.
    Upper hole diameter: 1.25 - 2 in.
    Lower hole diameter: 2 - 2.375 in.
    Instructions from the manufacturer:
    Wash before use. Hand or machine washable, gentle cycle. Line, lay flat or tumble dry on low or cool temperature.




    SpareParts started out as a small company, and we love the ways that they've expanded their product line over the years. They spend a lot of time on product development, and send prototypes out for user testing before unveiling their final product. The effort and care they put into their products and their interest in user feedback are truly what makes for the high quality and popularity of all of their products. Plus, in an industry where there is an abundance of harness designs, the folks at SpareParts are truly innovators with the unique designs of their comfortable, durable, and sexy harnesses.


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