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The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
  • The Square Tank Black
The Square Tank Black

The Square Tank Black
$90
ColorBlack
Size

Size Guide

Size XS S M L XL
US/CA 0-2 2-4 6-8 10-12 14-16
UK/AU 2-4 6-8 10-12 14-16 18-20
EU 30-32 32-34 36-38 40-42 44-46
Bust (in) 31-33 34-35 36-37 38-40 41-43
Bust (cm) - - - - -
Underbust (in) 26-28 28-30 30-32 32-34 34-36
Underbust (cm) - - - - -
Waist (in) 23-25 26-27 28-29 30-32 33-35
Waist (cm) - - - - -
Hip (in) 33-35 36-38 39-40 41-43 44-46
Hip (cm) - - - - -

How to measure

4 interest-free payments with Sezzle

Free standard shipping on orders over $200 USD

ADDING SOME COVERAGE

This full length tank is inspired by The Square Bra. This tank features removable padding, a double layered chest and single layered body so you feel comfortable and supported during your workout. Made in a curve-hugging, moisture-wicking double layered fabric with our signature 437 cloud™ technology.

Details

Pair with matching Essentials Legging and Wrap Top

Features

  • Longline tank with removable padding
  • Double layered chest and single layered body
  • Square front neckline and scoop back
  • White 437 logo at centre front chest
  • 437 cloud™ moisture wicking single layer fabric
  • Sustainably produced made of recycled polyester

Care & Fit

Size & Fit

  • True to size
  • Model is wearing a size XS -Bust 35" (89cm), Waist 25" (64cm), Hips 35" (89cm), Height 5'5 (165cm)

Materials & Care

  • 82% Recycled Polyester, 18% Spandex
  • Care: Machine wash cold. Dry flat, do not iron

Due to the nature of our performance fabrics and finishes, please allow for slight variations in stretch, softness, color, and texture. These characteristics are inherent to the fabric and finishing process and are not considered defects.

Made with thoughtfully selected materials, tested to meet strict limits for regulated PFAS compounds, including PFOA and PFOS

Shipping & Returns

We offer free shipping on all orders over $200 USD. Please see Shipping and Delivery page for the delivery time to your location.

Express shipping is temporarily unavailable for international orders—thanks for your patience as some deliveries may take a little longer due to global carrier delays.


437 is not responsible for any import duties, broker fees, customs and taxed incurred on shipments, as these are the responsibility of the purchaser. We cannot advise the cost as these charges will vary according to country. As these fees are not computed no applied by 437. If you are unsure about the charges please contact your local customs office for further information.


Please note that orders over $500 USD will require a signature upon delivery to ensure your package arrives safely and securely. Missing orders over $500USD may be required to fill out a police report.


Orders will be packed within 3-5 days of purchasing. Shipping time is dependent on location. We accept all regular priced merchandise within 30 days of the order being placed for a refund on your original form of payment or store credit via gift card. If a refund is selected, a $15 USD restock fee will be deducted from your return amount. If a store credit is selected, your gift card will be issued for the full value of your returned suits in USD and will not expire. Discounts of 25% or more are considered final sale. Please see our return policy for more details.

Paired with

Make it a set

The Curve Jacket Black

The Curve Jacket Black

The Curve Jacket Black
$105

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Customer Reviews

Overall rating: 5.0 / 5 from 72 reviews.

Customer photo review of The Square Tank / Black

Wore this top my entire pregnancy ! It was so comfy and fits so good !! Love the material !

Steph S. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

I love the top and fabric! It fits like a glove and never disappoints.

Marianna S. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Such a cute tank, and so comfortable! I bought it in grey too!

Pamela G. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Loved Loved Loved this top!!! It makes your b00bs look amazing!! The fabric is super soft and comfortable. I Love wearing it even when I workout at home, it makes me feel cute and sexy! I am 5'0" 92 lb for reference, got a size S because my girls are not xs lol.

Natalia G. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Love this material I’m definitely going to be buying more ❤️

Rosa G. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

These pieces are on the pricey side but they make me want to go to Pilates

Teresa G. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Amazing quality and fit made to perfection. Totally recommend!

Kelly C. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Another 10/10 review for 437. This tank is a staple in my rotation. I teach hot yoga and it’s hard to find material that dries quick between classes and doesn’t have you feeling uncomfortable. My one note, size down so it hugs you in all the right places! Love my 437 pieces.

Daniella C. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

I got the whole set and I love it so much! Going to get more colors.

Braelyn D. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

A brand I need to stop gatekeep because I’m obsessedddd with all the pieces!

Mr K. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Absolutely love my top and need to buy it in every color. It is so comfortable and fits perfectly! Perfect for working out and feeling cute

Arianna M. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

I love the square tank. It sucks you in and gives you the perfect silhouette ever!!!

Marissa C. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

Love this top so much!! It is so flattering and snatches you in + the material is so thick and high quality. Want this in every color

Nishita T. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

437 exceeded my expectations! the material is so buttery and thick, while being stretchy and snatches me perfectly!

Nadine G. 5/5 Verified

The Square Tank / Black

Customer photo review of The Square Tank / Black

love the material and so easy to work out in! very cute

Jenikka F. 5/5 Verified

The Square Tank / Black

I use to buy 437 bathing suits and I have been looking for new active wear and absolutely love it. Love the style and it’s just so comfortable, I love that it has a built in bra. Makes it so convenient.

Allison H. 5/5 Verified

The Square Tank / Black

Cute top but if you have a longer torso it’s cropped.

Halle M. 4/5 Verified

The Square Tank / Black

Best quality in my opinion. It’s like you’re wearing butter

Abbey A. 5/5 Verified

The Square Tank / Black

Love the fabric of this top and it’s cinching in a good way. Kept it and will wear it. Only slight complaint is if you’re on the bustier side it may not work.

Sarah W. 4/5 Verified

The Square Tank / Black

Perfect material! Feels great on and all true to size. ☺️

Delaina D. 5/5 Verified

The Square Tank / Black

Very happy with how it snatches me once on. My one complaint — it’s so hard to get on haha 😅

Summer K. 4/5 Verified

The Square Tank / Black

I really loved the material of my top and wrap top as well! Very elevated and comfortable, good quality activewear!

Knarik Y. 5/5 Verified

The Square Tank / Black

I just got my first item from 437. Easily my favourite top. I can't wait to try out other pieces. The fit is SO good and feminine but the quality / workout material is also there, which is important. I appreciate finding a brand that is functional and fashionable.

Myda K. 5/5

The Square Tank Black