# 20 Squared | No. 400, Unisex Long Sleeve T-Shirt

Honoring the milestone of No. 400, this piece explores the structural harmony of an equation brought to life. The clean paint brush lines provide a rhythmic flow to the "20 squared" concept, making the long sleeve a study in balance and proportion. The high-contrast black and red palette commands attention while maintaining the understated grace central to the ICHINICHI aesthetic. A sophisticated layer for those who find beauty in the logic of the everyday.  
  
Precision meets the soul. An archive of four hundred days expressed in a single stroke.  
  
Inside Collar Quote:  
Power In Logic  
論理の力

## Details

- **Price:** 40.0 USD
- **Vendor:** ichinichi studio
- **Type:** Long Sleeve T-Shirt

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| XS | 40.00 USD | In stock |
| S | 40.00 USD | In stock |
| M | 40.00 USD | In stock |
| L | 40.00 USD | In stock |
| XL | 40.00 USD | In stock |
| 2XL | 40.00 USD | In stock |

## Images

- Architectural 20 squared mathematical graphic in red and black on a Long Sleeve T-Shirt.
- Woman wearing a gray sweatshirt with '2021' printed on it, standing on a cobblestone street.

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> Source: [ichinichi studio](https://ichinichi.studio/products/20-squared-no-400-unisex-long-sleeve-t-shirt)
> Updated: 2026-05-08