Runsie Romper - Deep Navy


Color: Deep Navy
Peachy Rose
Size Guide

This all-in-onesie features comfy wide crisscross straps, a peek-a-boo keyhole boob sweat vent, and a waist-snatching waistband with flowy run shorts, complete with built-in matching underwear so you can move with confidence. 

Perfect for jogging, walking, hiking, and weightlifting.

Performance Level:

Features + Fit

• Wide crisscross straps
• Keyhole boob sweat vent
• Removable pads
• Built-in underwear
• Outer leg slits to allow full range of motion
• Inseam: 1.75“ (4.5 cm)

Model Info

Samara is wearing size S
Height: 5’9” • Bust: 32 • Bra 32C • Waist: 25” • Hips: 36”• Torso: 58”

Fabric + Care

Top: Brushed ButterSoft Flex
75% Nylon + 25% Spandex
Shorts: 100% recycled polyester; stretch woven fabric

Customer Reviews

Based on 55 reviews
Size Bought: M
Overall Fit: True to Size
Height: 5"3'
Bra Size: 34B
Body Type: Athletic
Weight: 120 lbs

This romper is so cute. The built in bra and underwear allow for a seamless fit. The criss cross design and front keyhole is flattering. The only thing i wish it had was a zippler pocket to store a phone or snacks when not using a bag otherwise it's stretchy, sweat wicking, and comfortable. Perfect for a hike!

Size Bought: S
Overall Fit: Small
Height: 5’3
Bra Size: 32a/ xs
Body Type: Pear
Weight: 131
Adorable but doesn’t suit my body

I love that Cassey always thinks outside of the box and creates such cute designs with amazing patterns. I had to get this runsie because it was so unique and cute.
I started off feeling so cute and confident in the runsie. However, I noticed the whole thing is VERY short. My lower body is larger than my upper body so I chose the size that fit my lower body. Due to this fact, the chest part did not feel as secure as I’d like it to. The small key hole gaped a bit. I love the cream color with the pattern but the suede made it feel a bit hot, I almost wish it was the same fabric as the underwear beneath the shorts. Also being so light colored, it was easy to see the padding under the fabric which felt bumpy.

As I started my workout with a run, I noticed just how short it was. Because everything is connected I couldn’t adjust really. I became a little self conscious as I realized my whole bottom was being exposed with every stride because it is more free flowing.

After my run I did exercises with dumbbells. It became really uncomfortable bending and just moving more as I felt I was constantly trying to adjust the fit. Unfortunately, by the end of the workout I was not as confident. I also noticed the suede-like material on the top was too easily dirtied. I had some black marks in the chest despite being careful.

I think this would suit someone who has the same size top and bottom and who would use it for light movement or working out at home. It’s hard to run outside or on a treadmill with a lot of people around you as it can be quite revealing on some bodies.
I live the design still but I’d like it to be more coverage or adjustable if possible. It’s beautiful but just not for my body.

Size Bought: XS
Overall Fit: True to Size
Height: 163cm
Bra Size: 34B
Body Type: Straight & Narrow
Weight: 48kg
Like a hug

Same as everyone, I was worried when I placed order for a onesie, but I just couldn't resist on the prints! And I did not regret buying this, it is so comfy like a hug and it suits the hot weather for us living in a tropical country! Enough support for daily pilates workout too! My torsol length is on a shorter side, hence this onesie gives a very flattering cut for legs ratio😍

Santana Coon
Size Bought: M
Overall Fit: Large
Height: 5’2”
Body Type: Athletic
Weight: 130
Love it

Absolutely love this romper. I was a little worried that it wouldn’t hold up to my kickboxing training but it kept everything in place, and didn’t show sweat amazingly well, especially for something white. 10/10. I probably could have sized down but I really just wanted to be comfortable.

Ylenia Mayen
Size Bought: S
Overall Fit: True to Size
Height: 5’2
Bra Size: 32A
Body Type: Straight & Narrow
Weight: 105
Super cute and comfortable

I love this romper! It is super cute and comfortable. It is stretchy and easy to put on and off. I wore it all day. Great to work out in and can be worn as a casual outfit. Definitely see more onesies or rompers in the near future