---
name: "Outlier Air/jex Openseas"
subtitle: "110gsm warp-knit polyester shirt that opens at the armpit"
date: 2026-06-21
link: "https://outlier.nyc/products/air-jex-openseas"
linkText: "outlier.nyc"
source: "Outlier"
topics: [clothing]
tags: [technical-fabric, shirt, hot-weather, made-in-nyc]
description: "A 110gsm open-construction polyester shirt with a single armpit button that converts it from tent silhouette to fully open, built for extreme heat."
---

A 100% polyester warp-knit shirt at 110gsm — light and open-construction enough that air flows through nearly unimpeded. The defining move is the elimination of conventional side seams: a single button at the armpit lets it open from tent-like to absurdly open, and the whole thing packs down to almost nothing. Built for the days when any normal shirt fabric feels like a mistake.