Close-up of the mockneck collar and zipper on the gray organic cotton half-zip sweatshirt
Kids Mockneck Half-Zip Sweatshirt – front view, grey body with contrasting trims, made from soft French terry.
Mockneck Sweatshirt Kids
Mockneck collar and zipper on the gray organic cotton half-zip sweatshirt on a boy
A girl smiling and wearing a heather gray and orange half zip sweatshirt
Close-up of the mockneck collar and zipper on the gray organic cotton half-zip sweatshirt on a girl
Boy pulling up a mockneck half zip sweatshirt to show the orange inside of the fabric
Mockneck collar and zipper on the gray organic cotton half-zip sweatshirt on a boy
Girl wearing mockneck half zip sweatshirt
Boy wearing mockneck half zip sweatshirt
A girl wearing a french terry half zip sweatshirt
Boy pulling up a mockneck half zip sweatshirt to show the orange inside of the fabric
A toddler boy wearing a half zip french terry sweatshirt in grey and orange
A toddler boy wearing a half zip french terry sweatshirt in grey and orange
French terry mockneck sweatshirt in heather gray and orange colors
Close up detail on a french terry half zip sweatshirt for kids in heather gray and orange colors
A front view of half zip mockneck sweatshirt for kids
French terry sweatshirt - back view
  • Orders $95+ Ship Free
Regular price$85.00
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Shipping calculated at checkout.
Size
Size chart
Size
Height (in)
Weight (lbs)
Chest (in)
Sleeve Length (in)
2T
33-36
30-33
3T
36-39
33-36
4T
39-42
36-40
5T
42-45
40-46
6-7
45-52
45-64
25-26
21.5-23
8-9
51-54
64-72
27
24.5
10-11
54-57
72-81
28.5
25.75
12-13
57-60
82-93
30
27

 

Use our detailed kids' size guide to find the perfect fit for your child. Explore accurate size charts and measurements for our organic cotton clothing—designed for comfort, style, and growing kids.

  • In stock, ready to ship
  • Backordered, shipping soon

The polished one that still gets played in.

Somewhere between a sweatshirt and a sweater sits the thing you want to dress your kid in most days. This is it: a mockneck half-zip in double-faced French terry, knit from 100% GOTS-certified organic cotton and milled in Italy. Buttery soft inside, warm without the bulk, and structured enough for the school photo.

The mockneck is the collar you've been seeing everywhere in grown-up fashion, from running brands to quiet-luxury knits, scaled down for kids. The half-zip means they get it on and off themselves. The fabric is the quiet showpiece: classic heather gray outside, bright orange inside, peeking out at the collar and zip.

It's the piece we'd point grandparents to. Substantial enough to feel like a real gift, useful enough to be worn weekly from the first school morning through spring soccer. Cut and sewn in small batches in NYC's Garment District.

Details

  • Double-faced French terry: heather gray outside, bright orange inside
  • 100% organic cotton, GOTS certified, milled in Italy
  • Mockneck collar with half-zip for easy on and off
  • Flash of orange at the collar and zip
  • Relaxed unisex fit, sizes 2-3T to 12/13
  • Cut and sewn in small batches in NYC's Garment District
  • Machine wash cold, tumble dry low

Why Parents Love It

With its incredibly soft feel, elevated mockneck silhouette, and easy half-zip closure, this sweatshirt strikes the perfect balance of comfort and style. Kids look instantly put together while feeling as cozy as in their favorite hoodie — and parents love that it holds up beautifully wash after wash, lasting long enough to pass down or resell.

Explore More Kids’ Favorites

Circular & Sustainable

Firebird pieces are designed to live more than one life. When your child outgrows this sweatshirt, you can resell it through our Pass It On resale program and give it a second home. Buy better, use better, resell, repeat.

About Firebird Kids

Firebird Kids creates heirloom-quality children’s clothing using premium organic fibers and thoughtful design. Designed in San Francisco and made in small batches in New York City’s Garment District, each piece is beautifully crafted, comfortable to wear, and made to be passed on. Explore more kids’ sweatshirts and wardrobe favorites.

100% GOTS-certified organic cotton. French terry fabric is made in Italy.

Machine wash cold, with like colors, gentle cycle, do not bleach, tumble dry on low.

Orders $95+ ship free (Continental US and Canada).

Shipping

Ground Shipping: Firebird offers FREE ground shipping  on orders over $95 going to any destination in the contiguous United States. For orders under $95, shipping is $5. Please allow 3-8 business days for arrival.

All orders above $150 to Alaska, Hawaii and U.S. Territories qualify for free shipping.

2-Day Shipping:  We offer expedited orders with 2-Day delivery for $25. Please note order processing time still applies to the order. 

Overnight Shipping: Overnight shipping is available for $35. Please note order processing time still applies to the order.

Returns & Exchanges

Visit the Firebird Returns Portal to return an item.

Firebird will exchange and accept returns of unworn, unused and unwashed products within 30 days of shipment, for free. 

Please reach out to hello@firebirdkids.com if you need any help with your exchange or return.

Shipping and Warranties 

Invalid Shipping Address: We are unable to ship domestically and/or internationally to P.O./APO/FPO boxes.

High quality. Timeless designs. Endless adventures.

Firebird Kids pieces are designed to last multiple washes, several lifetimes, and endless adventures.

We use only high-quality materials and GOTS-certified organic cotton, making our clothing more comfortable, durable, and sustainable.

Our designs are also chosen to make reuse and resale easier—unisex where possible and never based on fads.

Learn more about who we are and what we stand for.

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