The Sprint Short is a 2-in-1 design built for movement and style. An ultralight, quick-dry outer shell pairs with our new signature wide knit waistband and tunneled drawcord for a secure, customizable fit. Underneath, a soft, stretchy biker short made from our core fabric provides coverage, support, and is an excellent moisture-wicking, fast-drying, and shape-retention performance fabric. Side pockets keep essentials close while you train, and a reflective Day 1 logo adds a subtle performance finish.
*Does not include built-in underwear.
Fit Details
Designed For: Running, training, and high-mobility workouts
Fit: Body-hugging biker short under lightweight shell; secure drawcord waist
Features: Moisture-wicking, fast-drying, and shape-retaining core fabric; side pockets on biker short; reflective Day 1 logo
Fit Tip: True to size; biker short provides full coverage and support
Fabric & Care
Quick-dry nylon shell; core fabric biker shorts. Turn inside out, wash cold on gentle cycle; avoid fabric softener. Air dry recommended; if using a dryer, use the lowest heat setting. Imported.
The Sprint Short is a 2-in-1 design built for movement and style. An ultralight, quick-dry outer shell pairs with our new signature wide knit waistband and tunneled drawcord for a secure, customizable fit. Underneath, a soft, stretchy biker short made from our core fabric provides coverage, support, and is an excellent moisture-wicking, fast-drying, and shape-retention performance fabric. Side pockets keep essentials close while you train, and a reflective Day 1 logo adds a subtle performance finish.
*Does not include built-in underwear.
Fit Details
Designed For: Running, training, and high-mobility workouts
Fit: Body-hugging biker short under lightweight shell; secure drawcord waist
Features: Moisture-wicking, fast-drying, and shape-retaining core fabric; side pockets on biker short; reflective Day 1 logo
Fit Tip: True to size; biker short provides full coverage and support
Fabric & Care
Quick-dry nylon shell; core fabric biker shorts. Turn inside out, wash cold on gentle cycle; avoid fabric softener. Air dry recommended; if using a dryer, use the lowest heat setting. Imported.
SHORTS
Coverage You Can Count On.
Shorts that move with you, not against you. Whether you're running miles or running errands, our shorts are designed for full-range movement with built in coverage and support.
Most-Loved Features
FUNCTIONAL POCKETS
Real pockets that actually hold things — no decorative slots, no barely-there openings.
4-WAY STRETCH
Moves with you in every direction — squats, lunges, lifts, and everything in between — without restricting your range.
QUICK-DRY
Dries fast whether you're cooling down between sets or heading out after a workout.
Love these! I’m also here to say I love that you carry XXS not everyone does and I appreciate that! Cute/ comfy shorts! My last name is also Day so I feel like these are personalized for me😄 may need the mint color too!
K
Katie Nerem
Sprint Short Review
I love the fit of these shorts! Very sporty but cute enough to wear as an everyday outfit.
The color of this bra is so beautiful. Sewn in bra pads are a game changer. Also really love the racer back detail. So cute.
Stride Bra
Laura
These are the best shorts!
These are the best shorts! Love the fit and that they don’t ride up ever
Motion Bike Short
Laura
I’ve honestly been reaching for my Day 1 sets nonstop
I’ve honestly been reaching for my Day 1 sets nonstop. They’re buttery soft, squat-proof, and stay in place during my workouts without constantly needing to be adjusted. I also love that they’re flattering without feeling too tight or restrictive. As someone who’s in activewear almost every morning, these have quickly become one of my favorite sets to train in.
