This piece is sexy and it snatches my body just right ! Perfect for a Lagree class!
Customer Reviews
Overall rating: 4.9 / 5 from 54 reviews.
Love the quality and how it well it hugs the body
I love the quality and cut of the pieces. This was my first time buying from 437 and I can't wait to buy more of their fits! The one pieces fit perfectly and are cute as athleisure as well as practical for the gym and pilates. I already have my next cart filled!
Love how soft it is and how the material hugs you! I am 5’9, 150 lbs and I purchased a medium. Love it.
Love the quality
My favorite brand, love it so mush!
Sized up for a comfy fit. Love it!
Unique onesie! Trendy and fun piece to own, fabric is high quality
I loved my onesie I wore it on my birthday the back is so cute !!!!!! I would continue wearing to to my reformer classes and yoga !!!!
![Customer photo review of [PREORDER] The Halter Onesie Black](http://images.loox.io/uploads/2026/10/6/lX6gJV_Tti_mid.jpg)
Super flattering and really good quality
These where made to move in so obsessed
Absolutely love this jumpsuit. I first purchased in the cream color, and had to order it in black. Super flattering, comfortable and cuteee!✨
Super comfortable fit! Material is great at absorbing sweat. Slight compression around waist to really snatch the waist! Got so many compliments!!
first time ordering from 437 and I was not let down. I get so many compliments every time I wear this. Perfect mix of sexy yet totally functional for pilates classes. I was worried the cream would show too much but the material is quite thick and compressing that I feel like it would make any body type look like a dream.
![Customer photo review of [PREORDER] The Halter Onesie Black](http://images.loox.io/uploads/2026/9/24/sG-NCOB7b_mid.jpg)
so soft and buttery + very flattering! love it sm
![Customer photo review of [PREORDER] The Halter Onesie Black](http://images.loox.io/uploads/2026/9/17/K-rYmReozo_mid.jpg)
I love this brand so much so cute and sophisticated
![Customer photo review of [PREORDER] The Halter Onesie Black](http://images.loox.io/uploads/2026/9/16/3ODfZPpoeJ_mid.jpg)
I loved the set, the quality and how good it makes you look
The fit is unreal! Such a versatile piece that can be worn out or for a workout! It’s so smooth and flattering. As a petite girl, the length is absolutely perfect. It’s slim-fitting and waist-snatching without feeling uncomfortable. I love it so much!
Love it! Super cute and comfy
Love how comfortable it feels! :) I had to return xs and get a s and it fits like a glove
Loved the material on this piece!
Wore this completely open back onesie to couples yoga and the girls stayed secure and that’s all I was worried about. Sometime halters hurt your neck, but I love this one, I got so many compliments wearing this. Love the capri. P.S. plz bring back swim
Love the fit of this! So flattering
The onesie fits perfect! 437 always has the best quality!
I could wear this everyday, so lightweight and flattering. Comes with padding which I always appreciate. Still compressive in the belly area and perfect cropped length to go with flip flops.
I love everything I have bought here! One of my fav workout clothes brands 🖤🤍
Not see through at all. Fits perfectly.
Love
The fit is perfect. I’m 5’7 and purchased a small.
Its so cute! it fits me well and the fabric quality is great, one of my new favorite pieces for sure!:)
Perfect for, very stretchy, and I got a lot of compliments! Will be purchasing more items!
It runs true to size
Super cute onesie! I love that the capris flare it’s very flattering on the legs and glutes!!
The only thing I didn’t liked about it was the bust area was too small, I’m 34 c and the bust hold wasn’t great
Love the fabric. buttery soft!!!
Absolutely love this onesie! The material is super soft and comfortable, and it’s true to size. It fits perfectly and is even cuter in person. Definitely a great purchase!
I’m 5’8, so the S is just a hair too tight around my neck but otherwise this onesie is PERFECT. So soft, so good for low impact workouts. I love wearing mine to Pilates 🩷
The fabric is so buttery soft! I’m in love with every piece I’ve purchased.
i got so many compliments ! i'm 5'8 130 pounds and ordered small and it was perfect
M Black fits very well, however I feel I should try a S