"Hardened Hearts" Boxy Jersey — Limited Edition

Hardened Hearts Boxy Jersey — Limited Edition Colorway.

 Some hearts don’t just get tougher — they calcify. This limited-edition Hardened Hearts boxy jersey is for anyone who’s been through enough rounds to start hearing entrance music every time they walk into a room.

We built this piece around the original stone-heart illustration from Erinem’s first The Bad Side release — the one that looks like it’s already taken a few swings and asked for more. The deep red + charcoal colorway is exclusive to this drop, and the oversized “01” on the front hits like a spotlight cutting on mid-arena. Boxy fit, breathable mesh, and a vibe that says: resilience looks better when it’s intentional.

It’s a uniform for people who’ve learned to armor up without losing their edge. If your heart’s a little hardened? Honestly, same. Wear it proudly.

Details:
• Limited-edition colorway
• Full-print mesh boxy jersey
• Hand-drawn stone heart crest
• Oversized “01” front + back with a diffused stadium-light effect
• Lightweight, breathable, and arena-ready
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No AI was used to make or design this product.
All graphics are hand drawn by Erinem.
Merch x Erinem: Human Designed with a Human in Mind.

© Merch x Erinem, 2025.
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Age restrictions: For adults
EU Warranty: 2 years

In compliance with the General Product Safety Regulation (GPSR), Merch x Erinem and SINDEN VENTURES LIMITED ensure that all consumer products offered are safe and meet EU standards. For any product safety related inquiries or concerns, please contact our EU representative at gpsr@sindenventures.com. You can also write to us at . or Markou Evgenikou 11, Mesa Geitonia, 4002, Limassol, Cyprus.

Size guide