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The CRZ YOGA bottoms use a double-layer fabric construction that reviewers compare to their popular Naked leggings—meaning the material holds its shape and compression through repeated wear and water exposure. The ruched side panels create a gathered effect that adds visual volume to a flatter rear without relying on padding or push-up tricks.

Reviewers consistently note the “flattering” side ruching and the fact that the medium-rise hits an inch or two below the belly button, which is ideal for women who want coverage without a high-waist flattening effect. The adjustable side ties allow you to dial in the tension around your hips, preventing the fabric from bagging out when wet.

Active moms and postpartum bodies report that the double-layer fabric “covers loose skin” without riding up or cutting into the leg openings. At 5’3” and 160 lbs, a size L fits securely without tightness. The only consideration is that the fabric is substantial—if you want a barely-there feel, these may feel more like a compression short.

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The Tempt Me bottoms use a V-cut front panel that draws the eye downward and outward, creating a visual triangle that makes the hips appear wider relative to the waist. This optical trick is critical for flatter profiles—by emphasizing a wider hip line, the rear automatically looks rounder and more projected.

Reviewers at 5’7” and 130 lbs report that the medium fits “true to size” and the cheeky cut is flattering “but not too cheeky.” The mid-rise landing avoids the high-waist panel that can visually flatten the buttocks. Multiple reviewers note that this is the “best bathing suit bottoms ever” because it balances coverage with shape.

The fabric quality feels sturdy, and the V-cut holds its shape rather than stretching out. One reviewer with a wider bottom noted that these were the first bottoms that fit great without riding up. The only catch is that the cheeky cut may be too revealing for those seeking full coverage, and the size range does not extend into plus sizes.

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The ZOHAMUNG bottoms use a string-tie hipster design with a ruched back panel that allows you to control how tight the fabric sits across your rear. This adjustability is key for flat bums—by cinching the ties, you create a gathered effect that adds perceived fullness. The cheeky cut also helps by revealing more skin, which naturally creates a rounder visual impression.

Reviewers with a 33-inch waist and 42-inch hips found that a medium “fits perfectly” and the structured fabric holds the tummy in without feeling restrictive. The retro-inspired cut hits at a true mid-rise, and the cheeky back provides a lift that many full-coverage bottoms lack. One reviewer noted it “makes your butt look great” due to the curved seam at the back.

The main consideration is that the string ties can stretch out when wet, requiring retightening. Some reviewers reported that the waistband is not tummy-shaping and that the fabric loosens in water. If you are between sizes, consider sizing down to maintain tension when wet. The fabric weight is lighter than the CRZ YOGA option, so it is better for lounging than active swimming.

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This tankini-style bottom offers full coverage across the rear without the high-waist cut that can flatten a smaller backside. The ruched side panels are sewn in as permanent gathers (not adjustable ties), which means they maintain their shape consistently even after repeated washing. Reviewers report that after “a handful of washes,” the colors and structure remain intact.

The fit is described as “snug but no indenting” for a 5’3”, 120 lb reviewer with 35-inch hips. The full coverage ensures “no cheeks hanging out,” which is ideal for those who want modesty but still need a shape-enhancing cut. The ruched fabric adds texture and visual weight to the sides, which draws the eye outward and makes the rear appear fuller.

The fabric is lined and feels substantial, but reviewers note that it does not have the same stretch recovery as the CRZ YOGA option. One reviewer switched to a different brand with “a little bit more stretch.” If you have a very flat profile and want active shape retention, this may not hold as firmly as double-layer options.

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ZAFUL’s high-waisted option uses a ruched front panel that provides tummy compression while the rear cut is slightly cheeky, creating a contrast that adds visual volume to the backside. For flat-bum concerns, the key is that the high waist does not extend too far down the glutes—it stops at the natural waist, allowing the rear to pop rather than be smothered by fabric.

A reviewer at 5’2”, 135 lbs with a “small butt” reported these were “the swim bottoms I’ve been searching for,” highlighting that the ruched front and hip cut avoid the “baggy diaper” look common with high-waisted bottoms. The fabric is double-lined and holds its shape well, with reviewers noting that the ruched waist can be worn higher or lower depending on preference.

The sizing runs a bit large, with multiple reviewers recommending sizing down for better tummy compression and to prevent loosening in the water. One reviewer went from XL to Medium and reported a dramatically better fit. If you are between sizes, order the smaller option. The fabric quality holds up to hand washing without pilling or fading.

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The Eomenie bottom uses a high-waisted front to cover the lower tummy and C-section scars, while the back is a full cheeky cut that reveals significantly more skin. This front-back contrast is a powerful tool for flat-bum shapes because the high coverage in front makes the rear exposure feel intentional and lift-focused rather than accidental.

Reviewers rave about the “flattering fit and coverage” with the soft, stretchy material that feels comfortable without digging in. One reviewer specifically noted that it covered her “belly stretch marks and C-section” while still looking sexy from behind. The cheeky cut is aggressive—multiple reviewers confirm it is essentially a thong back.

The fabric is on the thinner side compared to the double-layer options, which means it may not hold its shape as firmly over long swim sessions. One reviewer returned the item because the back was “most definitely a thong” and deemed inappropriate for public wear. This is not a conservative cut—if you want coverage, look elsewhere. The color also runs fluorescent in certain shades, so check real customer photos before buying.

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The Beach House Chloe is the most modest option in this lineup, offering full coverage that “covers the cheeks” without the bunched, gathered seams that create visual volume. Instead of relying on ruching, this bottom uses a clean, smooth fabric panel and a high-waist cut to provide a streamlined silhouette. For flat-bum shapes, this works best if your goal is a sleek, no-fuss look rather than optical enhancement.

Reviewers consistently praise the “perfect cut and flattering fit” and note that the bottoms stay in place without riding up or creating panty lines. One reviewer wore them from 149 lbs down to 120 lbs and found the fit remained consistent across size changes, indicating the fabric has excellent elastic recovery. The fabric is lined, not too thin, and feels durable.

The trade-off is clear: this bottom does not add volume or lift. It is designed for coverage and comfort, not shape manipulation. If you have a very flat profile, the smooth high-waist panel can visually elongate and flatten your backside further. This is best for women who prioritize modesty and durability over creating a rounder silhouette. The price point is the highest in the list, reflecting the brand’s quality construction.