It's Only Permanent Crewneck

Wash with like colors: This helps prevent colors from bleeding or affecting other items in the wash.
Turn inside out: Turning the crewneck inside out protects the outer surface, especially if there's any print or embroidery, from fading or damage during washing.
Machine wash cold: Use cold water for washing, as hot water can cause shrinkage and damage the fibers.
Gentle cycle: Select a gentle or delicate wash cycle to minimize wear and tear on the fabric.
Use a mild detergent: Choose a detergent that is gentle and suitable for delicate fabrics.