Runsie Romper - Deep Navy


Color: Deep Navy
Peachy Rose
📏Size Chart

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”

Model Info
Model: Sam Height: 5.9" Bust: 32" Bra: 32C Waist: 25" Hips: 36" Torso: 58" Sam is wearing size S
Fabric + Care

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

Customer Reviews

Based on 71 reviews
Size Bought: XS
Overall Fit: True to Size
Height: 167 cm
Bra Size: 70B
Body Type: Hourglass
Weight: 54
Perfect for hot summers

I've been eyeing this forever since it came out, and very happy I bought it with the Black Friday sale. I love the design and how cute it is, but I must say that it doesn't give me enough support for running, even though I have a very modest bosom. Such a pity and defeats the purpose of a runsie. I will buy the Refine bra as recommended to be able to run in it. It is also a bit hard for me to take off, and I always worry about the elastic breaking when I pull it over my hips. That's why I give it only 3 stars, but I still think it is super cute。 The fabric is also very light so I think it is perfect to wear in Summer, I can't wait already!

Size Bought: XS
Overall Fit: True to Size
Height: 173
Bra Size: 75B
Body Type: Athletic
Weight: 52 kg

This is the cutest romper I have even seen and it’s so comfortable! I had very low expectations to be honest, as it was my first ever order from this brand and I didn’t expect random YouTube blogger to make some masterpieces as it was presented hehe ( I don’t use SM, so I never heard about this designer, and you know how it is sometimes when you order something online) ! But I was wrong, she did a great job and this is sooo comfy to wear and looks so beautiful 😻 many thanks ;) I was so impressed I even ask husband to make pics so I can add it to review ( also never write reviews lol, but this brand is so cute!)

Size Bought: M
Overall Fit: True to Size
Height: 5’8
Bra Size: 34D
Body Type: Hourglass
Weight: 140
So Cute!

This romper is great!!!! Fits really well and is super cute! I bought it in both colors but ended up returning the white one. I loved the style but I felt like you could see the padding a little bit with the lighter color. The navy one is perfect! I’ll buy any other dark colored ones you make!
I don’t think this would give me enough support to run in, but it’s great for running errands, walking or hiking. I think it would do well in pilates or yoga too!
For reference, I’m 5’8 about 140lbs and 34D and I bought a size medium. All of my onesies from Popflex are medium, but I do wear smalls in all of my leggings and shirts/bras from them. With my height I need the slightly bigger size.

Size Bought: M
Overall Fit: True to Size
Height: 5'6"
Bra Size: 36C
Body Type: Hourglass
Weight: 143

I LOVE this romper, it's so unique and stylish, I'm so glad I got it! It's almost short YouTube review tells alI! I recommend wearing a sports bra underneath for high impact exercise. Looking forward to trying more by Popflex! YouTube video placeholder
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!