Turn the jersey inside out and place in the washing machine. Wash the jersey alone as other items that have zippers and velcro components can damage the jersey.
Run a small load size using a cold water cycle and a capful of delicate laundry detergent.
Remove the jersey from the wash when the cycle completes, turn the jersey right side out and hang dry.
Fill the sink with about two gallons cold water and 1 tsp. mild laundry detergent. Swish the water with your hands.
Swish the jersey in the soapy water. Rub away residue with your fingertips.
Drain the water from the sink and rinse the jersey well with cold water to remove any leftover soap.
Wring out the jersey gently and hang dry.