SpareParts Tomboii Purple/Black Nylon

The SpareParts Tomboii harness briefs offer a buckle-free, strap-free alternative to traditional strap-on harnesses. Made from a buttery-soft blend of 85% Lenzing Modal (Rayon) and 15% Spandex, they slide on and off like everyday underwear — no chafing buckles, dangling straps, or pinched skin to wrestle with mid-session. The briefs feature two O-ring openings with a diameter range of 1.25" to 2.25" (3.18 cm – 5.72 cm), accommodating a wide variety of strap-on dildos and vibrators with a compatible flared or O-ring-friendly base. Three built-in bullet pockets let you layer vibration exactly where it counts, an internal packing strap supports pack-and-play use, and a condom pouch keeps essentials close. The Tomboii is available in sizes XS through 3X to fit low waist measurements from 26" to 52".

Tomboii harness brief features:

• Buckle-free design: Slides on and off smoothly with no straps, buckles, or hardware to adjust.
• Dual O-ring openings: Two holes for varied penetration angles or simultaneous double penetration.
• Three bullet pockets: Built-in internal pockets sized for bullet vibrators to add stimulation for the wearer or partner.
• Internal packing strap: Supports pack-and-play use for comfortable all-day or intimate wear.
• Condom pouch: Integrated storage for safer-sex essentials.
• Inclusive sizing: Available in XS, S, M, L, XL, 2X, and 3X — size up if between sizes.
• Compatible with most strap-on dildos and vibrators that have a base fitting the 1.25" – 2.25" O-ring range.

Specifications / Size & material

• Material: 85% Lenzing Modal (Rayon), 15% Spandex
• Body safety: Lenzing Modal is a soft, breathable fabric; free of rigid hardware against the skin.
• O-ring diameter (all sizes): 1.25" – 2.25" / 3.18 cm – 5.72 cm
• O-ring circumference (all sizes): 3.92" – 7.07" / 9.96 cm – 17.96 cm
• Size XS — Low waist: 26" – 28" / 66.04 cm – 71.12 cm
• Size S — Low waist: 29" – 32" / 73.66 cm – 81.3 cm
• Size M — Low waist: 33" – 37" / 83.82 cm – 93.98 cm
• Size L — Low waist: 38" – 40" / 96.52 cm – 101.6 cm
• Size XL — Low waist: 41" – 44" / 104.14 cm – 111.76 cm
• Size 2X — Low waist: 45" – 48" / 114.3 cm – 121.92 cm
• Size 3X — Low waist: 49" – 52" / 124.46 cm – 132.08 cm
• Sizing note: Order one size up if you fall between sizes.
• Color: Purple/Black
• Brand: SpareParts

Intensity & Experience Level

Level: Beginner | Sensation: Restrictive (wearable/penetrative)

The Tomboii is one of the most approachable strap-on harness options available — its underwear-style fit removes the learning curve of buckle harnesses, making it forgiving for first-time wearers. The stretchy Modal/Spandex blend is accommodating across body types, and there are no mechanical parts to overtighten or misalign.

Who is this product for?

• First-time strap-on users: Anyone who wants to try strap-on play without navigating complicated buckle systems or learning to fit a traditional harness.
• People exploring double penetration or varied angles: The two O-ring holes and bullet pockets open up versatile play configurations in one wearable piece.
• Partners managing erectile difficulty: A discreet, comfortable way to maintain penetrative intimacy regardless of erection status, including for those experiencing premature ejaculation or erectile dysfunction.
• Users with limited hand or arm mobility: The slide-on design removes the need to fasten buckles or thread straps, making it significantly more accessible than traditional harnesses.
• Packers and gender-diverse wearers: The internal packing strap makes the Tomboii suitable for pack-and-play use throughout the day or during intimacy.

How to use the Tomboii?

1. Choose your size: Refer to the size chart using your low waist measurement. When in doubt, size up for a more comfortable and secure fit.
2. Pre-load your accessories: Before putting the briefs on, insert your bullet vibrators into the built-in pockets and have your dildo or vibrator ready to go — this avoids fumbling mid-session.
3. Slide on like underwear: Step in and pull up. There are no straps, buckles, or adjustments needed.
4. Insert your toy: Choose which of the two O-ring holes suits your preferred penetration angle or play style. For dual play, you can use both. Ensure your toy has a compatible flared or O-ring-friendly base that fits within the 1.25" – 2.25" diameter range.
5. Comfort checkpoint: Before partnered play, check that the briefs sit comfortably at the low waist, the toy feels stable in the O-ring, and there is no pinching or unusual pressure. Practice solo movement first to get used to how the toy feels while worn.
6. Explore positions: On top (rider) for directional control, from behind (doggy) for a natural thrusting feel, or straddling while seated for face-to-face intimacy.
7. Stop and release step: To remove, simply slide the briefs down and off. The toy can be lifted free of the O-ring without tools or unfastening hardware.

Techniques & ways to play

• Solo practice: Wear the Tomboii alone first to find your preferred O-ring hole, test toy stability during movement, and get comfortable with how the fit feels before partnered use.
• Solo vibration: Load bullet vibrators into the internal pockets and wear without a dildo for wearable vibration during masturbation or light activity.
• Partnered penetration: Use with a compatible strap-on dildo for penetrative partnered play in a range of positions — the snug fit supports natural thrusting movement without the harness shifting.
• Double penetration play: Thread toys through both O-ring openings simultaneously for dual-penetration scenes with a partner.
• Vibration for the wearer: Position a bullet in the pocket closest to the wearer's body for shared stimulation during partnered play.
• Dom/sub dynamic: The wearer (Dom) retains full directional control through body movement, while the receiving partner can provide feedback on depth and angle. Discuss preferred positions, toy size, and limits clearly before escalating intensity.

Pairs well with / Complete the scene

• Strap-on dildos: Any dildo with a flared or harness-compatible base fitting a 1.25" – 2.25" O-ring — look for body-safe silicone options.
• Strap-on vibrators: Wearable vibrating dildos designed for harness use pair seamlessly with the Tomboii's O-ring openings.
• Bullet vibrators: Compact bullets sized for the three internal pockets add wearer stimulation — essential for getting the most from the harness brief design.
• Water-based lubricant: Required consumable for comfortable penetrative use; choose a body-safe water-based formula compatible with the harness's fabric and any silicone toys used.
• Condoms: The built-in condom pouch keeps them on hand; use with dildos for easier clean-up and added safety.
• Soft packers: Compatible with the internal packing strap for pack-and-play or gender-affirming everyday wear.
• Collections to explore: Strap-On Harnesses & Systems, Wearable Vibrators & Accessories.

How to clean and care

• Cleaning: Machine-wash on a cold, gentle cycle after every session where lube or fluids were used. Place in a mesh laundry bag to reduce wear and help the briefs maintain their shape.
• Drying: Air dry flat or drip dry to preserve elasticity. Do not tumble dry or apply heat — this will degrade the Modal/Spandex blend over time.
• Lubricant compatibility: Use water-based lubricants. Avoid oil-based lubes, which can degrade the fabric. Avoid heavy silicone lubricants near silicone toy inserts to prevent material interactions.
• Storage: Store in a clean, dry drawer or a cloth bag. Keep the briefs separate from silicone toys to prevent long-term material interaction.

Additional information

• Versatility: Suitable for solo vibration play, partnered strap-on play, double penetration, and pack-and-play use — all from one garment.
• Accessibility: The slide-on design is especially beneficial for users with limited dexterity or reduced mobility in the hands and arms who cannot manage buckle-style harnesses.
• Intimacy support: May be well suited for individuals who experience difficulty maintaining an erection, premature ejaculation, or erectile dysfunction, as it enables penetrative intimacy with a toy regardless of erection status.
• Durability: Modal fabric is ultra-soft and durable with proper care — cold machine-washing and air drying will help the briefs hold their shape across many uses. Avoid extremely large-girth toys that could warp the O-ring material over time.

Special considerations / warnings

• Mobility requirement: Putting the Tomboii on and taking it off requires enough lower-body mobility to step in and pull up — users with significant lower-body mobility restrictions should assess fit and access before purchasing.
• O-ring limits: Do not force toys with a girth beyond the O-ring's maximum diameter. Extreme girths can warp or damage the fabric O-ring over time.
• Toy base compatibility: Only use dildos or vibrators with a flared base or harness-compatible base. Toys without a secure base can slip free during use.
• Lube and material care: Oil-based lubricants and heavy silicone products can degrade the fabric and reduce the garment's lifespan. Stick to water-based formulas.
• Comfort tip: Lightly trim pubic hair around the groin if you experience discomfort when removing or adjusting the briefs after play, particularly when the fabric is damp.
• Not a medical device: This product is not intended to diagnose, treat, or cure any medical condition. If you have concerns about sexual health or erectile function, consult a qualified healthcare provider.

18+ only. For consensual adult use.