Layer One

$ 65.00

Core Carbon
Seasonal
Size

Layer One

Size chart

Women's tops

Rabbit size XXS XS S M L XL XXL
Chest 28" - 30" 71.12cm - 76.2cm 30" - 32" 76.2cm - 81.3cm 32" - 34" 81.3cm - 86.4cm 34" - 36" 86.4cm - 91.4cm 36" - 38" 91.4cm - 96.5cm 38" - 40" 96.5cm - 102cm 40" - 42" 101.6cm - 106.68cm

Women's sports bras

Rabbit size XS S M L XL XXL
Chest 30" - 32" 76.2cm - 81.3cm 32" - 34" 81.3cm - 86.4cm 34" - 36" 86.4cm - 91.4cm 36" - 38" 91.4cm - 96.5cm 38" - 40" 96.5cm - 102cm 38" - 40" 96.5cm - 102cm
Cup size AA-A AA-B A-C A-C B-C A-D

Women's bottoms

Rabbit size XXS XS S M L XL
Waist 23' - 24" 58.42cm - 60.96cm 24" - 25" 61cm - 63.5cm 25" - 26" 63.5cm - 66cm 27" - 28" 68.6cm - 71.1cm 29" - 31" 73.7cm - 78.7cm 32" - 33" 81.3cm - 83.8cm
Size 0 2 4 6 8-10 10-12
Layer One
Free shipping over $125 Easy 30-day returns

Layer one matters most. But will any flatter and fit like our new thermal top? Lightweight grid fleece performs as a breathable base or solo layer. Flatlock seams reduce chafing for long-lasting comfort.

We love it for: cold weather running

  • 67% recycled polyester, 27% polyester & 6% spandex
  • Lightweight grid fleece
  • Warm, stretchy & quick-drying
  • Tailored fit 
  • Flatlock seams
  • Locker loop
  • Elbow patches
  • Machine wash cold, tumble dry low, don't bleach, mmkay?
  • Designed in California, made abroad
Shipping & Returns Show Hide

Free standard shipping on orders over $125. Orders ship within 1-2 business days. Not loving the fit? Returns and exchanges are free within 30 days of delivery.

Ideal for

  • Cold weather running
Cold Weather Training

Cold Weather Training

Born from a quest for better short

#Color_Hawthorn-Rose

Stash-Hers 5"

$75.00

Inseam 5"
Storage 360° waistband storage, side-stash pockets, back-zip pocket
Fabric Innovation Ionic+ silver technology fight odor
#Color_Garnet

Men's Speedsters

$70.00

Inseam 9"
Pockets 2 side stash pockets, back zip pocket
Fabric Innovation Ionic+ silver technology fight odor

Ideal for

  • Cold weather running
Cold Weather Training

Cold Weather Training

Born from a quest for better short

#Color_Hawthorn-Rose

Stash-Hers 5"

$75.00

Inseam 5"
Storage 360° waistband storage, side-stash pockets, back-zip pocket
Fabric Innovation Ionic+ silver technology fight odor
#Color_Garnet

Men's Speedsters

$70.00

Inseam 9"
Pockets 2 side stash pockets, back zip pocket
Fabric Innovation Ionic+ silver technology fight odor

Overall rating: 4.757576 / 5 from 33 reviews.

AI Generated Review Summary

Layer One is a lightweight grid fleece thermal top designed for cold weather running. It is made from a blend of 67% recycled polyester, 27% polyester, and 6% spandex, offering warmth, stretch, and quick-drying properties. Customers appreciate its tailored fit and flatlock seams for reduced chafing and long-lasting comfort.

Summary topics

  • Layer (50%): Many customers expressed satisfaction with the layer, stating that it is perfect for fall/spring weather.
  • Fit (30%): Many customers expressed appreciation for the tailored fit of the product, mentioning that it is true to size.

Review topics: ["color","fit","fabric","layer","length","warmth","material","shirt","top","person","piece","sleeve"].

Review highlights

  • "I would size up because it's a tailored fit, just wish there was a relaxed fit option for us self conscious gals." — Venati
  • "It's a great base layer or everyday top and the sleeve length is perfect!" — Stephanie H.
  • "A nice warm winter layer, good on its own or as a base." — Mallori O.

Reviews

Layer one

"This is the softest running shirt I own. I wear it in cooler weather often because it is very comfortable and warm. I really love the pink color it’s very pretty! The arm length is perfect, though I wish it were a little bit more cropped at the bottom."

— Oyungerel B. (5/5)

Do Anything Layer!

"I am so impressed by the Layer One! I love the durability and warmth it provides, while also being lightweight. The best feature is the loop on the outside of the shirt (top back) for easy drying/hanging up. So simple and so helpful! Will be adding more to my collection!"

— Arynn F. (5/5)

Amazing Top

"I bought two of these, one for myself and one for my daughter. Instant love! Amazing color, great fabric and fit. We couldn’t be happier with this product."

— Helen W. (5/5)

Abrasive fabric for highly sensitive persons

"If you are a highly sensitive person you will not like this fabric. The shirt is well made but I wanted to share this on here because I purchased this because one of the reviewers said the material is soft. That person may have thought so but if you are someone who routinely removes tags this isn't soft at all. The EZ tees are soft! They are the most wonderful shirts and I live in them, but this did not work for me."

— Deb (3/5)

Really good

"The Layer One is good base layer, maybe slightly warmer than the EZ long sleeve. This shirt fits like the original EZ long sleeve which I LOVED; if you like the new “relaxed” EZ LS fit, maybe size up in this? For reference, I am 5’4” 107# and got this in XS."

— Kelly P. (5/5)

Great base layer !

"A great base layer in the winter when it’s cold outside. Hoping to use it alive when the weather cools. Beautiful color!"

— Linda M. (5/5)

Exceptional

"totally amazed at how comfortable this garment is, exceptional"

— Clifford M. (5/5)

Love!!

"An absolute MUST if you run outside in the colder months. It’s an amazing base layer!!"

— Kallie S. (5/5)

This has quickly become my

"This has quickly become my favorite go-to shirt. It's comfortable, feels great on, and love the ballet pink color! It's a perfect fit and I will be buying this in other colors! It's a great base layer or everyday top and the sleeve length is perfect!"

— Stephanie H. (5/5)

Lightweight and warm

"This shirt is perfect for the cooler weather it is lightweight but keeps you incredibly warm. Great worn alone or with a light jacket over."

— Nichole B. (5/5)

Q&A