DROP 01 — MILE HIGH
THE ALTITUDE
COLLECTION
"THE FLANNEL THAT CLOSES THE GAP BETWEEN THE BLEACHERS AND THE BOUTIQUE."
Drop 01 — Mile High is SIDELINE's first release. Two hero pieces, one city, one palette. Built to exist at the intersection of sports energy and fashion credibility.
PIECES
2 Hero Silhouettes
UNITS
Limited to 50
SHIP DATE
August 2026
COLORWAY
Altitude (Orange / Navy / Cream)
PRODUCTION
Small-batch, Denver-inspired
THE SHIRT.
CAMPAIGN IMAGE COMING SOON
THE SHIRT.
Altitude Oversized Flannel Shirt
The Altitude Flannel Shirt is the anchor piece of Drop 01. Heavyweight brushed cotton cut to an oversized drop-shoulder silhouette — structured enough to stand alone, relaxed enough to layer over anything. This is the piece that closes the gap between the bleachers and the boutique.
FABRIC & CONSTRUCTION
280 GSM brushed flannel · Oversized drop-shoulder fit · Reinforced seams · Pre-washed for softness
SIZES
XS — 3XL
COLORWAY
Altitude — Orange · Navy · Cream · Charcoal
UNITS
Limited First Release — 25 Units
STYLING NOTE
"Wear open over a white tee. Layer under a stadium jacket. Style belted for an elevated look."
PRICING ANNOUNCED SOON
JOIN WAITLIST FOR EARLY ACCESSTHE DRESS.
THE DRESS.
Altitude Flannel Dress
The Altitude Flannel Dress is the women's anchor of Drop 01. Below-knee length, relaxed fit, and a raw-edge hem that feels intentional rather than unfinished. Game-day energy without the compromise — made for the woman who shows up to the stadium dressed better than anyone in the suite.
FABRIC & CONSTRUCTION
280 GSM brushed flannel · Oversized relaxed fit · Below-knee length · Raw-edge hem detail
SIZES
XS — 2XL
COLORWAY
Altitude — Orange · Navy · Cream · Charcoal
UNITS
Limited First Release — 25 Units
STYLING NOTE
"Wear with chelsea boots and a crossbody bag. Layer with a denim jacket for early fall games."
"The women's piece that proves game-day fashion can be genuinely elevated."
JOIN WAITLIST FOR EARLY ACCESSCAMPAIGN IMAGE COMING SOON
COLOR STORY
BUILT ON THE ALTITUDE PALETTE
Stadium Fire
#C84B31
Mile High Night
#1B2A4A
Gameday Canvas
#F5F0E8
Tunnel Grey
#2D2D2D
Every colorway tells the story of a city and its team. Altitude is Denver.
BEHIND THE SCENES
FOLLOW THE BUILD
Watch SIDELINE come to life in real time. Behind-the-scenes. Samples. Process. Culture.
VIP EARLY ACCESS
GET IN BEFORE THE DROP.
Drop 01 — Mile High is limited to 50 units. Early access subscribers get first pick, exclusive pricing, and behind-the-scenes access to the build.
SMS notifications — coming soon
Join 200+ fans already on the list
No spam. Early access only. Unsubscribe anytime.
50
Units Total
48hr
Early Access
0
Restocks
DROP 01 — MILE HIGH · AUGUST 2026
← SIDELINE.BYWILLO.AI