

✨ Undie-tectable Confidence: Your secret weapon for smooth, breathable, all-day chic!
The Spanx Women's Undie-Tectable Brief offers level 1 shaping with a smoothing waistband and elastic-free edges to eliminate visible panty lines. Made from a breathable, quick-drying polyamide-elastane blend with a cotton gusset, it targets lower tummy smoothing while providing full front coverage and a thong back. Designed slightly small, sizing up ensures the perfect fit. Machine washable and crafted for comfort and confidence.









| Care instructions | Machine Wash |
| Country of origin | China |
| Material composition | 75% Polyamide, 25% Elastane |
B**E
Mummy tummy heaven!
Arrived today and I’m surprised at how effective they are! I’m a UK size 10 (US 6) and have a bit of a mummy tummy, so went for the 36. I’ve tried other shapewear and it always seems to concentrate on the upper part of the tummy, pushing everything down. But this targets the lower tummy perfectly! No muffin top. And the thong aspect really boosts my (usually not that impressive) bum. Perfect for leggings, my hubby’s not been able to keep his hands off me all afternoon! Defo buying more!
I**2
Can't return them
Poor quality. Feel really let down by this product it's nowhere near as high as shown in the pictures and more like a pair of bikini briefs. Brought two to try as the sizing is confusing. Didn't even try them on they were tiny but the worst thing is they are not elligable for returns. Please don't but these.
I**E
feel very comfortable for a g-string if you see what I mean
Undetectable, feel very comfortable for a g-string if you see what I mean :) so I was impressed on that. The band fits high (but I am short torso) so looks great with all my high waisted trousers. The material is nice and thick so will retain its shape well after many washes. The sizing though is super small. I had to exchange xs for small somewhere else.
M**S
Not like previous Spanx
Comfortable but not like previous Spanx where i’ve literally needed a shoe horn to get them on, fabric softer & defo not tighter.
C**S
Good
Good product, do their job but don't expect them to hold as much as other spanx. They give you just that little help, exactly what I needed.
A**R
Lovely
My favourite suck me ins that I’ve bought
B**D
Top rolls down
Not a good fit on me. I’m petite size 8-10 and wanted to flatten my mum-tum. These did but created a mini muffin at the top, cutting me off just above the belly button. And when I sat down the top rolled down. Not streamline for me. Attractive looking though, as shapewear pants go. Just not for me. I found the Werena pair far better, they come higher and don’t roll. (And much cheaper!)
A**A
Bridesmaid dress undergarment
Purchased for bridesmaid dresss undergarment to keep me feeling confident all day. Product as described and true to size. Perfect for open back dress and keeping a smooth lower belly.
Trustpilot
1 day ago
3 weeks ago