Knix Just Quietly Launched Customizable Shapewear, And We Put It To The Test

Knix Just Quietly Launched Customizable Shapewear, And We Put It To The Test

Knix Shapewear ReviewKnix. Design: Jessie Quinn / StyleCaster

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Knix might be known for making some of the best period underwear around—seriously, I have a few pairs and am obsessed—but that’s not the only way it makes being a woman a bit easier (and more comfortable). The go-to period underwear brand just launched a line of customizable shapewear that has everything you could ever want in an undergarment, and some.    

Knix Shapewear at a Glance

  • Knix Customizable Shaper Thong Bodysuit, $90
  • Knix Shaper High Rise Leakproof Briefs, $55
  • Knix Customizable Open Bust Shaper Bodysuit, $110 
  • Knix Customizable Shaper High Rise Shorts, $55
  • Knix Customizable Shaper Bodysuit, $90

The Knix customizable shapewear collection features four new styles, including a Thong Bodysuit, an Open Bust Shaper Bodysuit, High Rise Shorts, and a Brief Bodysuit, that can each be customized in their own ways. From adjustable straps and impressive cup sizes to guidelines that show you where to cut for different short lengths and have built-in reinforcements to prevent them from fraying, I cannot sing this collection’s praises enough—but I will because it’s my job (and because I am obsessed with the pieces I tried). 

Up ahead, find out what it’s really like to slip into styles such as the Knix Customizable Shaper Thong Bodysuit and the Knix Customizable Open Bust Shaper Bodysuit, plus why everyone needs a pair of Knix Shaper High Rise Leakproof Briefs in their wardrobe. 

Our mission at site team is to bring style to the people, and we only feature products we think you’ll love as much as we do. Knix is a site team sponsor, however, all products in this article were independently selected by our editors. Please note that if you purchase something by clicking on a link within this story, we may receive a small commission of the sale.

Knix Shapewear Review 

Knix Customizable Shaper Thong Bodysuit Knix Customizable Shaper Thong Bodysuit $90 Buy Now One thing about me is that I love bodysuits, but I have a long torso, so finding one that fits well can be a challenge. I ordered the Knix Customizable Shaper Thong Bodysuit in size small (my usual size) and found that it not only fit like a glove, but was actually super comfy and didn’t feel too restrictive for shapewear. The bodysuit features a seamless thong and plunge back, so you can easily get away with wearing this under a low-back top or dress without it being detected. It also features a built-in bra (with sizes that go up to a G cup!) with padded cups and a more compressive band to keep you feeling nice and supported. I have a smaller bust, so bras and supportive features aren’t always a top priority for me in shapewear, but I love that this one gave me a natural-looking lift and has good shaping features. 

From a customization perspective, this bodysuit has adjustable straps so you can fix the fit and removable padded cups. The sizing is also a bit more customizable compared to other styles in the collection since you can choose sizes that fit your body and your bra size. 

Sizes available: XS-4XL 
Absorbency: None 
Colors available:
Material: 53% Lycra Xtra Life Spandex, 47% nylon
Gusset: 86% cotton, 10% spandex, 4% carbon

Knix Shaper High Rise Leakproof Briefs Knix Shaper High Rise Leakproof Briefs $55 Buy Now The customizable shapewear collection isn’t technically period-proof, but there are some Knix shapewear styles with leakproof technology. If you want to rock some shaping undies without the fear or leaking, consider the Knix Shaper High Rise Leakproof Briefs, which are honestly some of the most comfortable shapewear briefs I have ever tried. I ordered these in a size small (my usual size) and felt supported as soon as I slipped them on. The gusset is designed for light absorbency, so it’s a great choice for heavier period days when you are using a tampon but need an added layer of protection, or for the last day of your period. I love that in addition to its absorbent gusset, the undies also feature seamless ribbed detailing on the inside of the leg holes to help keep everything in place and prevent any slip-ups. The ultra-high waistband also features a nice smoothing effect that holds you in but doesn’t make you feel like you’re suffocating. The backside has enough flexibility to accentuate your curves.  

Sizes available: XS-4XL
Absorbency: Light
Colors available:
Material: 53% Lycra Xtra Life Spandex, 47% nylon, fresh fix technology
Gusset: Gusset 1: 86% cotton, 10% spandex, 4% carbon; Gusset 2: 96% polyester, 4% spandex; Gusset 3: 89% polyester, 11% spandex, 100% polyurethane coating

Knix Customizable Open Bust Shaper Bodysuit Knix Customizable Open Bust Shaper Bodysuit $110 Buy Now I’m going to be honest: This was my first time trying an open-bust shapewear bodysuit, so I didn’t know what to expect. However, after slipping into this, I totally get the hype. Just like the other shapewear styles I tried, this bodysuit is true to size and fits like a glove. I love that it holds you in without that stuffed feeling and how, even after long wear times, it’s still super comfortable. I wore this to a wedding under a dress with a more plunging neckline and loved that I could get the benefits of shapewear bodysuits without it sticking out of the neckline. I also love that these have built-in shorts instead of a thong or brief because it not only smoothed out my thighs but protected against chaffing. 

The bodysuit features all the details you want in shapewear, too. It’s supportive, but with some flexibility so you don’t feel too restricted, and it can also accentuate your curves. The bodysuit also features adjustable straps and built-in guidelines that you can actually cut to achieve your desired shorts length.

Sizes available: XS-4XL
Absorbency: None 
Colors available:
Material: 53% Lycra Xtra Life Spandex, 47% nylon 
Gusset: 86% cotton, 10% spandex, 4% carbon

Don’t just take my word for it; head to Knix now to invest in some new shapewear for yourself. Trust us, your wardrobe will thank us.

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