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Out of everything in ShaperX’s catalog, this is the piece that shows up first on the best-sellers page: the 6-Steel-Bones Tummy Control Faja with Butt Lift, priced at $35.99 (down from $59.99) with an 86% five-star rating across 56 reviews. I went through the product spec sheet and a batch of those reviews to see if it earns the top spot.
What it’s made of
The shell is 69% nylon and 31% spandex, reinforced with six hidden steel bones for structured, all-around support. Compression comes from two layers working together: a front zipper and a row of inner hook-and-eye closures underneath it.
The bust is open, so you wear your own bra instead of a built-in shelf. The leg openings use lace bands with a no-roll grip, and the shoulder straps adjust for torso length.
What buyers are actually saying
An 86% five-star rating across 56 reviews (with the remaining 14% at four stars, meaning zero reviews below that) is a strong, consistent result. One reviewer wrote that the dual fasteners keep the zipper from slipping and that it “doesn’t squish the butt, it lifts it perfectly.”
Another buyer described wearing it under a dress for a wedding and called the result a “flawless silhouette,” adding it worked well for postpartum recovery. A third called the tummy control firm enough to create a snatched waist while still crediting the V-shaped panel for defining the waistline.
Sizing and fit
Sizes run XS through 3XL, and ShaperX’s own size guide recommends measuring your waist and hips rather than guessing from your regular clothing size. If your measurements fall between two sizes, the brand’s stated advice is to prioritize your waist measurement.
That said, the broader pattern across ShaperX reviews is worth factoring in here too. Independent shapewear review sites report that sizing across the brand tends to run large, so buyers chasing firm compression usually size down rather than up.
How it compares
Within ShaperX’s own lineup, this faja sits above the brand’s seamless bodysuits on compression strength, thanks to the steel boning and double-layer closure. Against a specialty faja brand like Leonisa, you’re trading proprietary Powernet fabric and 65-plus years of manufacturing history for a lower price point. I broke that trade-off down fully in ShaperX vs Leonisa.
Should you buy it
If you want firmer, event-ready compression with a real butt-lift effect at under $40, this is the strongest-reviewed piece in ShaperX’s entire catalog. Measure your waist and hips before ordering, size down if you’re between sizes, and confirm the item isn’t marked final sale before you buy.
For the brand’s full return and shipping fine print, see my returns and current deals guide. For keeping the compression and lace bands intact wash after wash, check how to care for your ShaperX shapewear.
Keep reading: my full ShaperX brand review, how to pick the right ShaperX piece, and where to buy ShaperX authentically.