The h Tee Planck’s Constant Unisex Organic T-Shirt

Show off your love of the tiniest things in the universe with the h Tee. Featuring the classic italic h from physics, this shirt celebrates the constant that started it all. Perfect for physicists, math geeks, and anyone who knows that even the smallest things can make a big impact.

Scientific style: Clean, italic h design straight out of a physics textbook.
Soft, durable cotton: Comfortable for lab work, lectures, or late-night problem sets.
Wear it proudly, because even the tiniest h can make you look infinitely smart.

Made from 100% organic ring-spun cotton, this unisex t-shirt is a total must-have. It's high-quality, super comfy, and best of all—eco-friendly.

• 100% organic ring-spun cotton
• Fabric weight: 5.3 oz./yd.² (180 g/m²)
• Single jersey
• Medium fit
• Set-in sleeves
• 1 × 1 rib at collar
• Wide double-needle topstitch on the sleeves and bottom hems
• Self-fabric neck tape (inside, back of the neck)
• The fabric of this product holds certifications for its organic cotton content under GOTS (Global Organic Textile Standard) and OCS (Organic Content Standard)
• The fabric of this product is OEKO-TEX Standard 100 certified and PETA-Approved Vegan
• Blank product sourced from Bangladesh

The sizes correspond to a smaller size in the US market, so US customers should order a size up.

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide