Step into inclusion with our World Down Syndrome Day 321 Crew Socks — created to celebrate March 21 (3/21) and the three copies of the 21st chromosome known as Trisomy 21.
Crew socks are a powerful symbol on World Down Syndrome Day, inspired by chromosomes’ shape and the global “Rock Your Socks” movement. These 321 awareness socks let you show your support in a fun, visible, and meaningful way.
Why “321”?
The number 321 represents:
• 3 copies
• Of the 21st chromosome
• Celebrated worldwide on March 21
Product Features:
• Soft, breathable fabric blend
• Comfortable crew-length fit
• Stretchy and supportive design
• Durable knit with vibrant 321 detail
• Perfect for everyday wear
Perfect For:
✔ World Down Syndrome Day celebrations
✔ Rock Your Socks school events
✔ Awareness walks and community gatherings
✔ Matching family or team outfits
✔ Meaningful gift for supporters
Fun. Visible. Impactful.
Rock your 321 with pride and purpose. 💛🧦
Crew socks are a powerful symbol on World Down Syndrome Day, inspired by chromosomes’ shape and the global “Rock Your Socks” movement. These 321 awareness socks let you show your support in a fun, visible, and meaningful way.
Why “321”?
The number 321 represents:
• 3 copies
• Of the 21st chromosome
• Celebrated worldwide on March 21
Product Features:
• Soft, breathable fabric blend
• Comfortable crew-length fit
• Stretchy and supportive design
• Durable knit with vibrant 321 detail
• Perfect for everyday wear
Perfect For:
✔ World Down Syndrome Day celebrations
✔ Rock Your Socks school events
✔ Awareness walks and community gatherings
✔ Matching family or team outfits
✔ Meaningful gift for supporters
Fun. Visible. Impactful.
Rock your 321 with pride and purpose. 💛🧦
Size guide
| TOTAL LENGTH (inches) | WIDTH (inches) | WOMEN'S US SIZE | MEN'S US SIZE | |
| S | 13 | 4 | 6 - 8 | 5 - 6.5 |
| M | 15 ⅜ | 4 | 8.5 - 11 | 7 - 9.5 |
| L | 16 ⅛ | 4 | 11.5 - 13 | 10 - 13 |





