Cart
Icon/Bag-Active

Save up to 70% off selected styles with offer code EXTRA25.
Shop Sale→

Sienna Tank
$115
Rated 4.4 out of 5
Based on 76 reviews

This comfy pullover style crop tank has a scoop neck and low back.

Fabric Guide

Fabric Guide

BioSculpt

Plant-based raw material sourced from castor bean.

    Organic alternative to fossil fuel based nylon

    Extra lycra content for strategic support


EcoLux

Made from a blend of recycled nylon and Lycra.

    Superfine matte jersey

    Superior stretch

EcoTex

Made from a nylon and Lycra blend.

    Superfine, scrunchie, touch-me texture

    Sustainably made in California

EcoCotton

Made from a blend of recycled cotton and Tencel.

    A super soft and lightweight knit

    Sustainably made in California


EcoRib

A sexy, stretch-ribbed fabric made from recycled Nylon fabric scraps.

    Lightweight, breathable + form flattering

    Production saves 33 liters of water/meter of fabric

    Sustainably made in California

EcoLinen

Made from 100% Linen.

    Breathable

    Earth friendly + biodegradable

Organic Rib

Made from a blend of sustainable Tencel, organic cotton, and Spandex.

    Super soft

    For texturized, ribbed beachwear

    Sustainably made in California

    GOTS Certified Organic Cotton

    OEKO-TEX certified, Non-Toxic + low impact dyes

Metallic

Made from a Nylon, Spandex, and Metalized Polyester blend. 

    Silky soft

    Jersey Stretch

EcoSoft

A super soft plant-based fleece blend made from 60% hemp and 40% organic cotton.

    99% Compostable and biodegradable

    GOTS Certified Organic Cotton

    Organically grown without pesticides

    OEKO-TEX certified, non-toxic + low impact dyes

Fabric:

Essential Colors:

Limited Edition:

Size: Find My Size

Find My Size

Product image

Sienna Tank - Copper EcoRib

Coverage:

Less Support More Support

Size 10-12 tops are constructed with more depth to accommodate D-DD cup sizes. For A and small B cups, try wearing back to front, for instant cleavage.

• Pullover

• Wide underbust band

• Fully lined


Still not sure about fit or style? Start a Live Chat with our fit experts.

Fit Finder

Measuring Guide

Size Chart

Enter your measurements below to find your recommended size.

We recommend size:

The size selected is not available.

Still not sure about the fit or style? We’re here to help!

Start a live chat with our fit experts now.

4/XS
6/S
8/M
10/L
12/D/XL
14/DD
Less Support More Support
Fit Details

Size 10-12 tops are constructed with more depth to accommodate D-DD cup sizes. For A and small B cups, try wearing back to front, for instant cleavage.

• Pullover

• Wide underbust band

• Fully lined


Still not sure about fit or style? Start a with our fit experts.

Fabric + Care Instructions

Handwash in cold water, dry flat. Learn More.


83% Recycled Nylon + 17% Lycra

Sustainability

Made from EcoRib - a sexy, stretch-ribbed swim fabric made from nylon fabric scraps. It's lightweight, breathable and form flattering. Our EcoRib fabric is textile crafted by a mechanical regeneration system that saves .63 liters of oil and 33 liters of water per meter of fabric. Sustainably made in California.


In our mission to cut plastic, this product comes in biodegradable and recyclable packaging.

Styled by You

Show us how you style your #VitaminAswim

average rating 4.4 out of 5
Based on 76 reviews
  • 5 Stars
    55 Reviews
  • 4 Stars
    6 Reviews
  • 3 Stars
    7 Reviews
  • 2 Stars
    4 Reviews
  • 1 Star
    4 Reviews
83% of reviewers would recommend this product to a friend
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Quality
Rated 4 out of 5
Support
Rated 3 out of 5
Customer photos and videos
76 Reviews
Reviewed by Marina W.
Verified Buyer
I recommend this product
Bra Size
40D
Height
5' 9"
Size Purchased
14/DD
Size Normally Worn
12/D/XL
Rated 5 out of 5
Review posted

Great color

Love the color. Love the fabric. Love that it's eco-friendly. Runs a bit small.

Loading...
Fit
Rated -1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Quality
Rated 5 out of 5
Support
Rated 4 out of 5
Was this helpful?

Vitamin A Swim

Hi Marina,

So glad to hear you are loving the Sienna Tank.

xx

Reviewed by Jamie
Verified Reviewer
I recommend this product
Bra Size
34C
Height
5' 5"
Size Purchased
10/L
Size Normally Worn
6/S
Rated 5 out of 5
Review posted

My favorite!

I have this top and the matching Midori bottoms in 5 different colors. I’m 30 years old with a semi athletic build, 34C cup size. The large size in both tops and bottoms fit me perfectly! I love surfing and going to the beach in this suit all summer long. It’s supportive, flattering, sexy and keeps everything in place. Vitamin A is the only brand of bathing suits I own. Nothing else compares!

Loading...
Fit
Rated -1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Quality
Rated 5 out of 5
Support
Rated 5 out of 5
Was this helpful?

Vitamin A Swim

Hi Jamie,

The Sienna Top paired with the Midori bottom is a match made in heaven :) We appreciate your continued support.

xx

Reviewed by Kimberli N.
Verified Buyer
I recommend this product
Bra Size
34C
Height
5' 0"
Size Purchased
8/M
Size Normally Worn
8/M
Rated 4 out of 5
Review posted

Love the fit and color

I'm normally a 34C and this top in M fit perfectly. The band is not too tight and the straps are not too long which is a problem I see a lot of at my short height. My only critique is that the material is so light and it's beautiful but thin so I would be nice to have removal pad options.

Loading...
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Quality
Rated 4 out of 5
Support
Rated 2 out of 5
Was this helpful?

Vitamin A Swim

Hi Kimberli,

We appreciate your feedback! 💛

xx

Sustainability is Sexy

Sustainability is Sexy

Our Promise

We believe style + sustainability are inseparable. All of our bikinis and bodysuits are sustainably made in California, from plant-based and recycled materials.
Super Natural.

As a proud member of 1% For the Planet, we give back to organizations who work to protect our oceans and the environment.

Shop New Arrivals

Shop New Arrivals