It Works on My Machine | 自分のマシンでは動いてる

"It runs perfectly on my machine" — every engineer has said it, thought it, or lived it. This design turns that classic developer disclaimer into a badge of honor, worn with zero irony. Every time you reach for this shirt, you're making a quiet statement to anyone who's ever stared at an error log at 2am. No explanation needed. Someone across the room will nod in silent solidarity.

---

「本番では動かないけど、ローカルでは完璧です」——エンジニアなら一度は心の中で叫んだはず。この言い訳を、証明書のように胸を張って主張するためのデザインです。このデザインを目にするたびに、あの日の「なぜ動かない…」という絶望と、「でも自分のマシンでは動いてた」という確信が蘇ります。同じ経験を持つ誰かと、無言で目が合う瞬間が生まれるかもしれません。

---

This t-shirt is everything you've dreamed of and more. It feels soft and lightweight, with the right amount of stretch. It's comfortable and flattering for all.

• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz./yd.² (142 g/m²)
• Pre-shrunk fabric
• Side-seamed construction
• Shoulder-to-shoulder taping
• Blank product sourced from Nicaragua, Mexico, Honduras, or the US

Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.

Size guide