Spare Parts


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 “Bold and assertive, Tomboi’s about play on your own terms—whenever, however.”

With a bold attitude and athletic cut, Tomboi™ harness briefs from SpareParts® deliver a smooth shot of sex appeal and get right to the chase: let’s do this. And it’s hard to say no, because this bad boi smashes the very boundaries of pleasure, from the super-durable O-ring to the drive-‘em-wild mini-vibe pockets. Tomboi™ slides on and off smoothly, without any chafing buckles, dangling straps, pinched skin, or other baggage to get in the way.

Play your way. We won’t stop you: Tomboi’s built-in internal support and sturdy elastic belt give you complete security and total control of the action—plus a sleek, streamlined fit.

Keep your options open. Don’t get stuck in a rut: Tomboi™ lets you switch a variety of toys in and out during play. Single dildos? Double dildos? The answer’s always oh, yeah: our signature elastic O-ring won’t turn down a good challenge—or lose its shape.

Turn up the pleasure. Two internal mini-vibe pockets (vibes not included) are stitched above and below the O-ring—just beyond direct bodily contact—to send the perfect pulse of pleasure to both partners. (It’s good to be generous.)

Get wet. Really wet. Tomboi™ nylon spandex briefs are 100% water-friendly and ready for any drip, drizzle, or downpour that comes your way. (Note: excludes Lenzing Modal® spandex version). Getting wet in other ways? Tomboi’s moisture-wicking fabric keeps you cool when things get hot.

Always be prepaÍred. Tomboi’s lightweight, breathable fabric means you can wear it all day long, and its internal securing strap is perfect for secure pack and play. Plus, the hidden inside pocket stashes away anything from condoms to cash.

    • Brief harness underwear, slips on and off as easily as regular briefs.
    • With internal packing strap, great for pack and play
    • Fun with a variety of toys—including double dildos
    • Securely fits toys 1.25–2.25 inches (3.17–5.71 cm) in diameter
    • Two internal fabric panels separate dildo base from skin, if desired.
    • Easily switch toys in and out during play
    • All-day wear
    • Wicks moisture away from the body, keeping you cool when things get hot
    • Built-in internal support ensures a secure fit and total control
    • Quick-dry nylon spandex is ideal for wet play
    • Airport-friendly (non-metal) materials won’t set off any alarms.
    • Vegan lifestyle friendly
    • Handcrafted in the USA from premium-quality materials
    • 77% Nylon / 23% Spandex OR 85% Lenzing Modal® / 15% Spandex

    • Two internal mini-vibe pockets, Positioned to pleasure both partners
    • Features a hidden inside pocket perfect for stashing anything from condoms to cash
    • Matching fabric storage pouch with zipper closure
    • 1-Year warranty


    • This product is hand or machine washable and completely hygienic.
    • Hand or machine washable on gentle cycle (preferably in a wash bag)
    • Line dry, lay flat, or tumble dry on low temperature.
    • Please wash before use.





    Choose your harness size based on both your actual body measurements and body shape, not based on your typical pant or jean size, which varies significantly between brands, designs, and cuts. Please don't skip this step: the right size harness will give you the most comfort and support, and will always look better than a size that's just "almost right."


    1. Get your lower waist/hip measurement. •Wrap a measuring tape around your waist, about 1 inch (2.5 cm) below your pelvic bone. •Mark the number where the tape measure completes and crosses over itself.
    2. Use that measurement, as well as your body shape, to determine your size. Tomboi™ performs best when your body fills out the harness, so choosing the right size is crucial. You should take your body shape into account before selecting a size. To do so, think of your body in terms of moon phases:


    bodies have beautiful, fuller curves. If you were to view this body shape from the side, you would see a half-moon shape in rear, and a quarter to half-moon shape in front, where the stomach is. If you have a full moon shape…choose the next size up.
    bodies have a balance of curves and planes. If you were to view this body shape from the side, you would see a quarter-moon shape in front and a half-moon shape in rear, or a a flatter front stomach area and a fuller three quarter-moon in rear. This body shape typically has a fuller butt and, sometimes, wider hips. If you have a three-quarter moon shape…choose the next size up.
    bodies are curvier in rear, flatter in front. If you were to view this body shape from the side, you would see a half-moon shape in rear. If you have a half-moon shape…stay to the size chart.
    bodies have gentler, less pronounced curves in rear. If you were to view this body shape from the side, you would see a quarter (or crescent) shape sloping from the tailbone to the top of the thigh. If you have a quarter/crescent moon shape…choose the next size down. If you have a quarter/crescent moon shape in rear, BUT a quarter to full-moon curve in front, at the stomach. In that case, stay to the size chart.