A pregnant woman wearing a black maternity tank top and matching black leggings with the brand name 'BIA+HERA' printed in white on the waistband, standing against a neutral gray background.

Core Maternity Tank with Built-in Belly Band

Black / XS
$78.00
$78.00
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A pregnant woman wearing a black maternity tank top and matching black leggings with the brand name 'BIA+HERA' printed in white on the waistband, standing against a neutral gray background.
  • A pregnant woman wearing a black maternity tank top and matching black leggings with the brand name 'BIA+HERA' printed in white on the waistband, standing against a neutral gray background.
  • A pregnant woman in a black maternity tank top and black leggings with 'BIA-HERA' printed in white on the hip, posing in a tree pose against a rustic wooden plank wall.
  • A pregnant woman viewed from behind wearing a black athletic tank top and matching leggings with white text reading 'BIA + HERA' around the waistband, against a plain light gray background.
  • A pregnant woman wearing a black maternity tank top and matching black leggings with white text, posing with her hands on her belly against a plain gray background.
  • A pregnant woman in a black maternity tank top and black leggings with white text, standing in profile against a plain light gray wall.
  • A pregnant woman in a black maternity tank top and black leggings with 'BIA+HERA' printed on the waistband, performing a yoga pose on a black mat in a studio with a gray wall and wood floor.
  • Close-up of a pregnant woman in a black maternity tank top and leggings, with her hands resting on her belly. Another woman is blurred in the background wearing matching black apparel.
  • A pregnant woman wearing a black maternity tank top and matching black leggings with the brand name 'BIA+HERA' printed in white on the waistband, standing against a neutral gray background.
  • A pregnant woman in a black maternity tank top and black leggings with 'BIA-HERA' printed in white on the hip, posing in a tree pose against a rustic wooden plank wall.
  • A pregnant woman viewed from behind wearing a black athletic tank top and matching leggings with white text reading 'BIA + HERA' around the waistband, against a plain light gray background.
  • A pregnant woman wearing a black maternity tank top and matching black leggings with white text, posing with her hands on her belly against a plain gray background.
  • A pregnant woman in a black maternity tank top and black leggings with white text, standing in profile against a plain light gray wall.
  • A pregnant woman in a black maternity tank top and black leggings with 'BIA+HERA' printed on the waistband, performing a yoga pose on a black mat in a studio with a gray wall and wood floor.
  • Close-up of a pregnant woman in a black maternity tank top and leggings, with her hands resting on her belly. Another woman is blurred in the background wearing matching black apparel.
Core Maternity Tank with Built-in Belly Band

Core Maternity Tank with Built-in Belly Band

$78.00
$78.00

Bia + Hera Sizing Guide

Your best fit starts with your pre-pregnancy size. Bia + Hera styles are thoughtfully designed with adaptive stretch and support to accommodate your changing shape throughout pregnancy. For most customers, we recommend ordering the same size you wore before pregnancy.

 

Size Bust (in) Waist (in) Hips (in)
XS 30-32 23-24.5 33-34.75
S 32-34 24.5-26.75 34.75-36.75
M 34-36 26.75-29 36.75-38.75
L 36-38 29-31.25 38.75-40.75
XL 38-40 31.25-33.5 40.75-42.75

 

Between sizes? For a more supportive fit, we recommend sizing down. For additional comfort during pregnancy, consider sizing up.
ColorBlack
Size

Free shipping · Ships in 2–3 business days · 30-day returns

The Core Maternity Tank is our signature everyday essential, combining timeless style with innovative function. A branded waistband and Bia + Hera’s patent-pending belly support design work together to deliver comfortable support, a flattering silhouette, and an adaptable fit that grows with you throughout pregnancy.

Designed to move the way you do, this maternity workout tank keeps your bump gently supported through running, lifting, prenatal yoga, and long days on your feet. Simple, versatile, and endlessly wearable, it’s the foundation of your pregnancy wardrobe, from first trimester to fourth.

Feature bullets

  • Patent-pending built-in belly support, with no separate belly band needed
  • Signature branded waistband for a clean, athletic look
  • Adaptable fit that grows with your bump through every trimester
  • Made for workouts, everyday wear, and everything in between
  • Soft, breathable, moisture-wicking fabric
  • Machine Washable on Delicate Cycle, Hang Dry


Model note: Emi is 24 weeks pregnant and wears a small/medium in tops pre-pregnancy. She's wearing a small in the Bia + Hera Core tank.

Why Bia + Hera

Support without the extra gear

The lift of a belly band and the comfort of a tank, built into one piece you can train in.

Feature Bia + Hera Built-in support tank Support belt Maternity tank
Lifts and supports your bump Takes pressure off as your belly grows Yes Yes No
All in one piece No separate band to buy or put on Yes Extra layer Yes
Stays put while you move No tugging, sliding, or riding up Yes Can shift Often rides up
Breathable for workouts Moisture-wicking, no extra heat Yes Adds a hot layer Varies
Smooth, no bulk Nothing visible under or over clothes Yes Bulky Yes
No velcro, hooks, or straps Gentle on sensitive pregnancy skin Yes No Yes
Looks great on its own From the gym to errands, no cover-up Yes Worn underneath Yes
Support you can wear all day Comfortable enough for workouts and everyday Yes Often too tight No support
Choose your size

Compared with typical maternity support belts and standard maternity tanks.

Women love Bia + Hera belly support tanks

"I'm always asking my husband to lift my belly. This tank does that for me all day."

The Bia + Hera Difference
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