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COMFORT YOU'LL WANT TO LIVE IN

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SEWN-IN BRA PADS

Smooth, secure, and always in place.

SEWN-IN UNDERWEAR

Delivers a smooth finish for easy, worry-free wear.

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Free standard shipping on orders $175+.

CUSTOMER SERVICE

Available via our Contact page and email.

RETREAT LOOKBOOK
CORE WIDE LEG SWEATPANT
DAY 1 LOGO SWEATSHIRT
CORE CROPPED SWEATSHIRT
CORE WIDE LEG SWEATPANT
CORE WIDE LEG SWEATPANT
CORE CROPPED SWEATSHIRT
DAY 1 LOGO SWEATSHIRT
CORE CROPPED SWEATSHIRT
DAY 1 LOGO SWEATSHIRT

PRODUCTS OF THE MONTH

$68.00
$82.00

WHAT CUSTOMERS ARE SAYING

So impressed with the quality! It’s so comfy, and I love the pockets on it! The collar gives it a more preppy look, which I love! Matches the blue herringbone perfectly! Well done Day 1!

Anonymous

I love the fit of this bra! The built-in pads are my favorite! It’s a dream of a sports bra! It’s snug in all the right places, stays in place, is so comfortable, and the criss-cross back is so cute!

Megan

I’m 5’2”, 129 lbs; a medium is my go-to, and the medium is perfect. The most luxurious leggings I now own! These are beautiful, fit well, and feel good. Not used to the no underwear, though, but that’s just me. Love the underwear liner concept.

Colleen

Love this jacket. I have it in black, and it was my go-to jacket all summer… had to purchase it in the red velvet… which is a beautiful color! Perfect for fall! I sized up for a roomier fit!

Anonymous

SHOP BESTSELLERS

Bundle & Save
Unity Herringbone Bra
$68.00
Why we love it
-Cross-back straps for secure, stay-in-place support through any movement
-Sewn-in bra pads for smooth coverage — no inserts, no adjusting
-New Herringbone fabric that sculpts and flatters — wear it alone or under the Peak Jacket
(4.9)
Wine
Everyday Track Pant
$82.00
Why we love it
-Two inseam options — Regular (29") and Tall (33")
-Real side-entry pockets — actually functional
-Three-color palette that makes it the most-noticed piece in the room
(4.6)
Red Velvet
Bundle & Save
Sculpt Crossover Legging
$76.00
Why we love it
-Crossover waistband creates a flattering, sculpting V-shape
-Built-in underwear for worry-free wear
-Seamless side pockets reinforced with bartacks for durability
(4.9)
Indigo
Ascent Jacket
$88.00
Why we love it
-Stowable hidden hood built into the collar — clean look, ready when you need it
-Water-resistant zippers + wind and rain protection
-Cinchable waist and elastic cuffs for a flattering, secure fit
(4.9)
Red Velvet
Bundle & Save
Elevate Ribbed Bra
$68.00
Why we love it
-Ribbed texture adds definition without bulk or compression
-Layered construction for a flattering, elevated silhouette
-Versatile enough to wear with leggings, shorts, or track pants
(4.9)
Dark Ruby
Bundle & Save
Elevate Ribbed Legging
$78.00
Why we love it
-Built-in underwear — no lines, nothing extra to wear underneath
-Ribbed texture elevates the look beyond standard activewear
-Pairs with Elevate Ribbed Bra for a full coordinated set
(4.9)
Dark Ruby
Sprint Short
$48.00
Why we love it
-5 stars from customers — the most-reviewed short in the line
-2-in-1 design: built-in spandex short underneath with side pockets
-Tunneled drawcord waistband for a secure, customizable fit
(5.0)
Mint/Aqua
Stride Bra
$65.00
Why we love it
-Sewn-in bra pads for shape and coverage — no extra inserts needed
-Racerback silhouette for full range of motion
-Pairs with the Limitless Long Sleeve as a layered set
(4.9)
Mint

SHOP DAY 1 DEALS

Final Sale
FINAL SALE - Breeze Tee
$58.00 $29.00
Why we love it
Draw attention to your product's standout features.
(4.6)
White
Final Sale
FINAL SALE - Performance Tank Top
$59.00 $29.50
Why we love it
Draw attention to your product's standout features.
(4.9)
Black
Final Sale
FINAL SALE - Golden Hour Cover-Up
$108.00 $54.00
Why we love it
Draw attention to your product's standout features.
(4.3)
Black
Final Sale
FINAL SALE - Ocean Drive One-Piece
$100.00 $50.00
Why we love it
Draw attention to your product's standout features.
(4.0)
White
Final Sale
FINAL SALE - Paradise One-Piece
$100.00 $50.00
Why we love it
Draw attention to your product's standout features.
(3.0)
Coastal Blue
Final Sale
FINAL SALE - Catalina Set
$100.00 $50.00
Why we love it
Draw attention to your product's standout features.
(4.4)
Coral Pink
Final Sale
FINAL SALE - Edge Bra
$68.00 $34.00
Why we love it
Draw attention to your product's standout features.
(5.0)
Burgundy
Final Sale
FINAL SALE - Refine Top
$70.00 $35.00
Why we love it
Draw attention to your product's standout features.
(5.0)
Burgundy
Final Sale
FINAL SALE - Sculpt Crossover Legging
$76.00 $38.00
Why we love it
Draw attention to your product's standout features.
(5.0)
Burgundy
Final Sale
FINAL SALE - Precision Legging
$78.00 $39.00
Why we love it
Draw attention to your product's standout features.
(5.0)
Burgundy

SHOP COLLECTIONS
INDIGO EDIT
MOMENTUM
NO LIMITS
STUDIO TO STREET
RETREAT
SOCIAL CLUB
SUMMIT HERRINGBONE
SUMMER

TAP TO SHOP THE LOOK

Make your move in Day 1.
Core Cropped Sweatshirt
$78.00
Why we love it
-Cropped length with a roomy relaxed fit — flattering on every body, comfortable enough to live in
-Ribbed collar, cuffs, and side panels — the structural details that keep it from looking sloppy
-Pairs with the Everyday Wide Leg Sweatpant as a complete matching set
Burgundy
Core Wide Leg Sweatpant
$69.00
Why we love it
-Wide-leg silhouette with a comfortable high-rise waistband — relaxed but elevated
-Front quarter pockets — clean detail that keeps the wide-leg line smooth
-Pairs with the Core Cropped Sweatshirt as a complete matching set
Burgundy
Collared Sweatshirt
$78.00
Why we love it
-Polo collar and piping details — the sport-luxe touches that make it different from every other sweatshirt
-Brushed fleece interior with a smooth exterior — soft on the inside, polished on the outside
-Roomy raglan fit that wears with skirts, leggings, trousers, or denim
(5.0)
Navy
Rally Skirt
$59.00
Why we love it
-Built-in biker shorts in our soft core legging fabric — full coverage, zero second-guessing
-Pleated outer skirt that moves beautifully through every swing, step, and stride
-Hidden side pockets on the inner shorts — your essentials come with you
Black
Bundle & Save
Peak Herringbone Jacket
$88.00
Why we love it
-New Herringbone fabric — sleek, fitted, and designed to hold its shape
-Invisible zipper pockets that lie completely flat — no bulge, no bulk
-Thumbholes + elevated zipper — the details that make it a step above
(5.0)
Wine
Bundle & Save
Summit Herringbone Legging
$79.00
Why we love it
-New and improved Herringbone fabric — softer, more sculpting, and textured to smooth imperfections
-Built-in underwear for worry-free wear — no separate layer, no visible lines
-High-waist sculpting fit with no front seam — clean, flattering from every angle
(5.0)
Wine
Bundle & Save
Unity Herringbone Bra
$68.00
Why we love it
-Cross-back straps for secure, stay-in-place support through any movement
-Sewn-in bra pads for smooth coverage — no inserts, no adjusting
-New Herringbone fabric that sculpts and flatters — wear it alone or under the Peak Jacket
(4.9)
Wine
Bundle & Save
Rise Herringbone Mini Flare Legging
$82.00
Why we love it
-Mini flare leg opening — the subtle silhouette detail that balances and elongates
-Built-in underwear for worry-free wear — no separate layer, no visible lines
-New Herringbone texture with sculpting high-rise fit — flattering from every angle
(5.0)
Wine
Sprint Short
$48.00
Why we love it
-5 stars from customers — the most-reviewed short in the line
-2-in-1 design: built-in spandex short underneath with side pockets
-Tunneled drawcord waistband for a secure, customizable fit
(5.0)
Mint/Aqua
Stride Bra
$65.00
Why we love it
-Sewn-in bra pads for shape and coverage — no extra inserts needed
-Racerback silhouette for full range of motion
-Pairs with the Limitless Long Sleeve as a layered set
(4.9)
Mint
Final Sale
FINAL SALE - Breeze Tee
$58.00 $29.00
Why we love it
-Lightweight fabric made for warm-weather movement
-Relaxed fit that works from gym to everywhere else
-Pairs with the Sprint Short for a complete summer set
(4.6)
White
Bundle & Save
Elevate Ribbed Bra
$68.00
Why we love it
-Ribbed texture adds definition without bulk or compression
-Layered construction for a flattering, elevated silhouette
-Versatile enough to wear with leggings, shorts, or track pants
(4.9)
Dark Ruby
Bundle & Save
Elevate Ribbed Legging
$78.00
Why we love it
-Built-in underwear — no lines, nothing extra to wear underneath
-Ribbed texture elevates the look beyond standard activewear
-Pairs with Elevate Ribbed Bra for a full coordinated set
(4.9)
Dark Ruby
Bundle & Save
Edge Bra
$68.00
Why we love it
-Sewn-in bra pads for shape and coverage — no inserts needed
-Back detail designed to stand out, not hide under a layer
-Available in bold colorways that photograph well on every skin tone
(5.0)
Indigo
Bundle & Save
Precision Legging
$78.00
Why we love it
-4.9 stars — one of the most-loved pieces in the entire catalog
-Built-in underwear — no separate layer needed
-High waist stays in place through every movement
(4.9)
Indigo
Bundle & Save
Sculpt Crossover Legging
$76.00
Why we love it
-Crossover waistband creates a flattering, sculpting V-shape
-Built-in underwear for worry-free wear
-Seamless side pockets reinforced with bartacks for durability
(4.9)
Indigo
Bundle & Save
Refine Top
$70.00
Why we love it
-Double-layer front for coverage — wears as a standalone top
-Open back detail that looks elevated, not just athletic
-Hits at the natural waist for a flattering, versatile silhouette
(5.0)
Indigo

Let customers speak for us

from 1208 reviews
Love

Love it

Jax Stephenson
Everyday Track Pant
The best fitness jacket ever! It’s is the best quality, flattering and comfortable

The best fitness jacket ever! It’s is the best quality and is flattering and comfortable. You literally couldn’t ask for more! It’s perfect got my normal size medium but could also do a small.

Martta
Peak Herringbone Jacket
Great fit

Great fit. Great compression. Look great!!

Anonymous
Summit Herringbone Legging
I love the fit of this bra! The built in pads are

I love the fit of this bra! The built in pads are my favorite! It’s a dream of a sports bra! It’s snug in all the right places, stays in place, so comfortable and the criss cross back is so cute!

Megan
Unity Herringbone Bra
I have the herringbone leggings in black size M

I have the herringbone leggings in black size M and they are my absolute FAVORITE pair of leggings I have ever owned! Truly so comfortable, soft, love the built in underwear and the pattern is perfection! Getting them in every color!

Megan
Summit Herringbone Legging
I LOVE it!

I LOVE it! So soft and comfy

Michelle Scott
Day 1 Fitness Apparel Black Print Heather Grey Hooded Sweatshirt

The fit and fabric texture are superb! Thoughtfully designed with built in underwear and sewed in light bra padding.

Michael Pannone
Summit Herringbone Legging
Love the square neckline and the long line design

Love the square neckline and the long line design of this bra! The sewn in bra pads are such a smart design. Very flattering fit

Virginia
Unity Herringbone Bra
Love the flattering fit, the fabric is amazing!

Love the flattering fit, the fabric is amazing! Not see through, super comfortable waistband and the best part is the sewn in underwear 🙌🙌

Virginia
Summit Herringbone Legging

Comfy and doesn’t even feel like you’re wearing a sports bra! No tension on the neck

Tiffany
Unity Herringbone Bra

My favorite leggings, now in flare! Love them!

Tiffany
Rise Herringbone Mini Flare Legging

Fits perfect, so comfy!

Tiffany
Collared Sweatshirt

Unfortunately these did not fit me but the quality is amazing! Will be ordering the correct size!

Janet
Elevate Ribbed Legging

In LOVE with these track pants!! The quality is amazing and they fit fantastic!!! Size and length are spot on! KALEE thank you for great fitting, well made athletic yet stylish clothing!!! Highly recommend!

Janet
Everyday Track Pant
So comfy, chic and sexy! It fits so well and is

So comfy, chic and sexy! It fits so well and is true to size. I’m a 34 B and got the Medium. The fabric quality is incredible. Not too thick or thin.

Ali Cleek
Elevate Ribbed Bra

IGNITE A WHOLE NEW YOU

Whether it’s your Day 1 or Day 1000, it all starts with comfortable, functional fitness apparel. Day 1’s mission is to fuel your fire with fashion-forward athletic wear that inspires and ignites a whole new you.

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