Sleepless Engineer Division
Anime-inspired streetwear for late nights, low signals, and systems that refuse to shut down.
FREE U.S. SHIPPING ON 2+ TEES
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MADE TO ORDER
Neon Theorem is built for thinkers, creators and rebels.
We combine minimal design with powerful ideas to create streetwear that speaks without saying a word.
Every piece is designed with intention, crafted for quality and made to stand out.
This is not basic.
This is Neon Theorem.
Neon Theorem tees feature a relaxed unisex fit. Choose your usual size for a standard fit or size up for a roomier streetwear look.
| Size | Width | Length | Sleeve |
|---|---|---|---|
| S | 18.3" | 26.6" | 16.3" |
| M | 20.3" | 28.0" | 17.8" |
| L | 22.0" | 29.4" | 19.0" |
| XL | 24.0" | 30.8" | 20.5" |
| 2XL | 26.0" | 31.6" | 21.8" |
| 3XL | 27.8" | 32.5" | 23.3" |
| 4XL | 29.8" | 33.5" | 24.6" |
| Size | Width | Length | Sleeve |
|---|---|---|---|
| S | 46.5 | 67.6 | 41.4 |
| M | 51.6 | 71.1 | 45.2 |
| L | 55.9 | 74.7 | 48.3 |
| XL | 61.0 | 78.2 | 52.1 |
| 2XL | 66.0 | 80.3 | 55.4 |
| 3XL | 70.6 | 82.6 | 59.2 |
| 4XL | 75.7 | 85.1 | 62.5 |
Everything you need to know about fit, fabric, shipping, care, and returns.
Neon Theorem tees have a relaxed unisex fit. Choose your usual size for a standard fit or size up for a roomier streetwear look.
Size up if you want an oversized streetwear look. For a standard relaxed fit, choose your usual size and compare the garment measurements with a T-shirt you already own.
Our tees are made from pre-shrunk 100% ring-spun U.S. cotton using heavyweight 6.1 oz garment-dyed blanks.
Garment-dyed means the shirt is dyed after construction, creating a softer feel, subtle color variation, and a lived-in vintage finish.
Yes. Free U.S. shipping is automatically applied when your cart contains 2 or more tees. No code is needed.
Yes. Tracking information will be emailed to you as soon as your order ships.
Wash inside out in cold water with like colors. Tumble dry low or hang dry. Do not iron directly over the printed design.
Neon Theorem creates original anime-inspired streetwear. Our designs are not licensed merchandise from any anime, manga, character, or entertainment franchise.
