Charles 5" Swim Trunk
The tailored 5-inch trunk that keeps Onia’s men’s swim line crisp and modern.
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Story & heritage
Onia presents the Charles 5" Swim Trunk as a refined take on traditional swimwear, with the shorter inseam doing most of the silhouette work. It is the brand’s foundational men’s swim shape: clean, tailored, and easy to pair with a shirt.
The current product page keeps the logic simple — a classic trunk that can move from water to terrace without looking like sport gear.
Materials & craft
The product copy calls out quick-dry fabric, a superfine mesh lining, an elastic waistband, an adjustable drawstring, reinforced side pockets, and a zipped back pocket.
The line also notes the 5-inch inseam, and the current solid version is made in recycled polyester.
How to choose & style
Wear Charles with a linen shirt or knit polo when you want the trunks to read polished rather than purely sporty. The shorter length keeps the look modern and lets the tailoring show.
