Black Seamless Undies
Regular price
$23.99 AUD
Say goodbye to VPL, wedgies, and underwear that can’t keep up. FitKnicks Seamless underwear are made for women who want to train hard and look good doing it—with zero distractions. No thongs, no butt bulge, just soft, stretchy support that disappears under your gym gear and stays put through every set, rep, and stretch.
Please note: this style is not Leakproof. For our Leakproof versions, go here!
👀 Seamless, no-show design for invisible but full coverage
🤸♀️ Soft, stretchy, and supportive—moves with you, never against you
🌺 Antimicrobial, silver-ion lining for hygiene and comfort
🍑 High-rise waist that stays put—no rolling or wedgies
💪 Durable enough to handle your toughest workouts
Please note - this version is not leakproof. For seamless and leakproof undies, check out FitKnicks Leakproof.
Main Body: Polyamide + Elastane
Lining: Cotton with Antimicrobial silver-ion treated crotch
Care Guide: Seamless underwear uses ultra‑fine fibres and bonded construction for a smooth, second‑skin finish, so proper care is critical - especially for leakproof styles with bonded gussets. Wash cool (≤30°C) on delicate with gentle, pH‑neutral detergent, ideally in a mesh wash bag. Always air dry (tumble drying is an absolute no‑no) and keep away from direct heat/sunlight. Never use fabric softeners, bleach, or dryer sheets, and don’t iron or dry clean. Full care instructions can be found here.
Shipping
- We use Australia Post to ensure fast shipping
- We offer a flat rate fee of $10 for standard shipping, or $15 for express within Australia. Orders over $100 AUD are eligible for free express shipping within Australia.
Returns
- You can easily return any unopened packs within 14 days of receipt via our online portal
- See our full policy here.
Why FitKnicks Seamless Undies
Anti-wedgie undies
Won't roll, bunch or give you grief under leggings
Breathable Comfort
Stretchy, moisture-wicking fabrics keep you fresh and dry.
no-show designs
Laser-cut & seamless designs eliminate visible panty lines (VPL).
for active women
From the silhouette to material selected, these are made with workouts in mind.
What they're great for
FitKnicks Seamless undies are made for women who train hard and want their underwear to work just as hard. They also don't want their knickers to feel like they could double as dental floss.
Designed for the demands of the gym, these undies disappear under tights, shorts, or compression wear—no VPL, no awkward lines, and definitely no wedgies. The antimicrobial, moisture-wicking lining keeps you feeling fresh and dry through even the sweatiest sessions, while the seamless construction means you can move, stretch, and lift without any rolling, bunching, or discomfort.
How to Wear & Care For Your Fitknicks
For Best Results
✓ Change within 30 minutes after your workout
✓ Let your skin air dry before putting on clean underwear
✓ Wear working out not for prolonged periods for best benefits
Easy Care Instructions
Wash: Cold water, gentle detergent (avoid fabric softener!)
Dry: Air dry away from direct heat - your underwear will last longer
Special Note: Seamless styles have antimicrobial treatment - use delicate cycle to keep it working
When to Replace
Replace every 6 months or when the fabric loses its stretch and quick-dry feel.