About Down syndrome

Down syndrome is the most common and readily identifiable chromosomal variation. In every cell in the human body, there is a nucleus, where genetic material is stored in genes.  Genes carry the codes responsible for all of our inherited traits and are grouped along rod-like structures called chromosomes.  Typically, the nucleus of each cell contains 23 pairs of chromosomes, half of which are inherited from each parent. Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21 (Trisomy 21) resulting in 47 chromosomes instead of the usual 46.  It occurs in approximately 1 in 690 live births. About 6,000 babies with Down syndrome are born in the United States each year. For more information about Down syndrome, click here.

About Rock Your Socks

Every year on March 21, people all around the world come together to celebrate World Down Syndrome Day by wearing brightly colored, mismatched socks. March 21 is symbolic because people with Down syndrome have 3 copies of their 21st chromosome. Socks were chosen because the karyotype of Down syndrome chromosomes actually looks like mismatched socks! 

Together we will create a single global voice advocating for the rights, inclusion, and well-being of people with Down syndrome in our schools, community, and around the world. 3/21, World Down Syndrome Day, was selected to signify the uniqueness of the triplication (trisomy) of the 21st chromosome which is Down syndrome.

The Down Syndrome Association of Delaware started the Rock Your Socks program in 2014 and now distributes over 100,000 pairs of socks every year! 

About the DSA of DE

Founded in 1979, the Down Syndrome Association of Delaware is a statewide non-profit support group. We aim to be a supportive resource, advocating for the acceptance and understanding that allows individuals with Down syndrome to achieve the same level of access and opportunity as their peers. Our mission is to support families, promote community involvement, and encourage a lifetime of opportunities for people with Down syndrome. For more information about our organization, click here.

How to Spread the Word

If you work with students within an educational or learning setting, view our Disability Awareness Toolkit. This toolkit includes videos, age-specific lesson plans, and other resources to promote disability awareness within your classroom. One of our moms has also created lesson plans, available for purchase, which we highly recommend.

We have a Rock Your Socks poster available in both English and Spanish to help spread the word about World Down Syndrome Day and Rock Your Socks.

If you are selling socks, we have created online marketing toolkits full of social media graphics, language guidelines, sample social media posts, and more.

Rock Your Socks Apparel



We also have Rock Your Socks apparel available for purchase! We have various styles and colors available in both youth and adult sizes. Orders will ship directly to you!