A cleaner fit under every shirt. Targeted support through the chest, stomach, and sides. Cotton-soft, breathable, and built to stay hidden all day.
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Limited first run. Founding members get 20% off & first pick of sizes.
Leave your underarms exposed and do nothing for your shape.
Bulky, hot, and show through everything.
Feel like a sauna, fit too tight, and trap odour.
BAYCE is the first layer men actually want to wear.
Two cuts, one system. Breathable knit where you need airflow, structure where you want a cleaner fit.
Sleeved
A wide, soft neckline that stays invisible under tees, polos, and dress shirts, even with the top button open.
Low profile bonded edges at the neckline, arm openings, and hem, with flat shoulder seams, help BAYCE sit smooth under clothing. No bulky stitching. No raised edges. No visible outlines under your shirt.
Targeted support that smooths the lower chest so shirts sit flatter.
Structured smoothing through the stomach and sides helps create a cleaner front profile while staying soft enough for all day wear.
Breathable cotton-soft fabric helps manage heat, moisture, and odour without the hot synthetic feel. For added protection, the sleeved version uses close-cut underarm coverage to help protect your outer shirt without bulk.
A longer hem keeps everything anchored and tucked in as you move throughout the day.
Sleeveless
Not your typical shapewear that feels padded, plastic, restrictive, or impossible to wear all day.
BAYCE is built for comfort first. It gives you breathable, cotton-soft support exactly where you want structure, without the heavy, restrictive feel of typical compression wear.
You put it on, your shirts fit better, and you forget it’s there.
That’s the whole point.
We rejected every hot, plastic-feeling synthetic on the market. BAYCE is being developed with a breathable stretch knit that feels soft against the skin but performs beyond a regular undershirt. It is designed to move with you, stay smooth under clothing, and hold its shape wash after wash.
I looked for this product for years.
Something I could wear under my shirts that made them sit cleaner, helped with sweat, and stayed hidden. Something that felt comfortable enough to wear every day, but still gave me a sharper, more confident fit.
But every option missed something.
Tank tops left my underarms exposed. Regular undershirts were bulky, visible, and lost their shape after a few washes. Compression shirts felt too tight, too hot, and too synthetic to wear all day.
So I decided to build the undershirt men actually need.
BAYCE is being developed as a premium everyday base layer with cotton-soft breathable fabric, targeted smoothing zones, sweat-control coverage, and invisible construction. It is designed to help your T-shirts, polos, and dress shirts sit cleaner without feeling like shapewear.
The goal is simple: make men look better, feel more confident, and forget they are even wearing it.
The first drop will be limited, and Founding Members will get access first.
Founding members lock in 20% off and first access before anything goes public.
The first production run is being engineered and fit-tested now. Members see it first, including behind-the-scenes of the build.
The first run is limited. When it’s ready, founding members order before anyone else, targeted for Fall 2026.
No. BAYCE has no padding, no costume-tight squeeze, and no plastic feel. It is a breathable everyday base layer with targeted support that helps smooth the areas most men care about. Think premium undershirt, engineered properly.
Not at all. That is one of the main reasons we created BAYCE. A lot of men avoid white shirts because regular undershirts show through, bunch up, or create obvious lines. BAYCE is designed with bonded seamless edges, a low profile neckline, and no bulky collar or hems, so it stays hidden under light shirts, especially in our Sand and Stone colorways.
BAYCE is being developed with a cotton-soft, breathable stretch knit designed for airflow, stretch, and all-day comfort. The final fabric composition is being locked during sampling, but our hard rule is simple: if it feels hot, plastic, or synthetic against your skin, it does not belong in BAYCE.
S through 4XL at launch, with the fit engineered for real bodies, not just mannequins. Founding members get first pick before sizes sell through.
The first drop is targeted for Fall 2026. Founding members get the exact date first, plus early ordering before the public.
20% off the first drop, first access before public launch, and a direct line to influence the product, we send members fit and feedback questions as we finalize it.
The first drop is limited. Founding members get 20% off and first pick of sizes.
You’re in. Check your inbox or search “BAYCE” for your Founding Member details.