DROP 01 — MILE HIGH

THE ALTITUDE
COLLECTION

Premium oversized flannel. Inspired by Denver.
Limited to 50 units.

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"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

PIECE 01 OF 02

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 ACCESS

THE 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 ACCESS

CAMPAIGN IMAGE COMING SOON

PIECE 02 OF 02

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.

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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.

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50

Units Total

48hr

Early Access

0

Restocks

DROP 01 — MILE HIGH · AUGUST 2026

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