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SIS THE LABEL

Core Tank

Core Tank

$109.95 AUD
$109.95 AUD
Sale Sold out
Shipping calculated at checkout.
Size
Colour: Mocha

In stock
  • Free standard shipping
  • Sizes 06-20
  • 21 Day returns

The Core Tank is the foundation of an elevated active wardrobe. Designed with the same flattering square neckline as the Core Crop, it offers additional coverage and support for all-day comfort. Signature ruching along each side seam provides a sculpting finish while remaining a distinctive SIS design detail. Pair it with the Core Legging for a coordinated active set or layer beneath the Sol Shirt and Form Blazer for a polished look that transitions effortlessly throughout your day.

Details

  • Signature Core fabrication
  • Square neckline
  • Built-in shelf bra for added support
  • Padding-free design
  • Thick shoulder straps
  • Side ruching for a flattering, supportive fit
  • Smooth, buttery-soft finish
  • 83% Nylon, 17% Elastane

Find Your Fit

Bri

  • Wears size AU06
  • 160cm tall

Nadin

  • Wears size AU08
  • 163cm tall

Lauren

  • Wears size AU16
  • 167cm tall

Sara

  • Wears size AU20
  • 186cm tall

Size Guide

View the full size guide here.

Shipping

Enjoy free standard shipping on all Australia-wide orders over $120. All orders are shipped via Australia Post Monday - Friday at 4pm. Orders made on a weekend, will be processed on Monday. We ship via standard post and express post for the following fee:

Standard post (2-8 business days) $10.95 

Express post (1-4 business days) $14.95

Returns

We have a 21-day return policy, which means you have 21 days after purchasing your item to request a return. Read the full return policy here.

View full details

Style with

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Styled by SIS

Pilates

Coffee run

lunch with the girls

Crafted in Core

Our signature Core fabrication combines 83% Nylon and 17% Elastane for a buttery-soft feel with supportive stretch. Lightweight, breathable and quick-drying, it's designed for comfort that lasts all day.

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Words From Our Community

Behind The Design

I designed the Core Tank because I wanted to create a style that offers a little more coverage and support while still feeling feminine and flattering. The side ruching is one of my favourite details! It softly sculpts the midsection and gives you that extra bit of confidence, making it a piece you'll reach for time and time again.

The SIS Promise

Designed in Australia

Every SIS piece is thoughtfully designed in Australia with versatility, longevity and the everyday woman in mind.

Intentionally crafted in small runs

We produce in small quantities to reduce waste, maintain quality and create pieces that feel considered rather than mass produced.

Inspired by real women and real routines

The daily grind rarely consists of just one outing or event, and neither should your wardrobe! Every SIS piece is designed to move with you through the many moments of your day from school drop-offs and coffee runs to work, studio sessions and dinner plans... so you can feel comfortable, confident and elevated wherever the day takes you.