I wash inside out in a clothes bag with no spin and cold water using a detergent for wool (e.g. Woollite, which may not be available where you are).
I dry (also inside out) on a heated drying rack on top of a thin pillowcase or a mesh for that purpose https://www.lakeland.co.uk/25293/dry-soon-deluxe-mesh-shelf-.... This speeds up drying despite the omission of spin, and takes about a day.
This has worked for at least a dozen cycles for a rollneck I quite like.
I wash inside out in a clothes bag with no spin and cold water using a detergent for wool (e.g. Woollite, which may not be available where you are).
I dry (also inside out) on a heated drying rack on top of a thin pillowcase or a mesh for that purpose https://www.lakeland.co.uk/25293/dry-soon-deluxe-mesh-shelf-.... This speeds up drying despite the omission of spin, and takes about a day.
This has worked for at least a dozen cycles for a rollneck I quite like.