My husband has tried various other brands of socks ,none of which
remotely resembled the L/XL I chose for him.
He finds Posey socks comfortable and true to advertised sizing.

Configura Comfort Left Dropdown Armrest – Black Vinyl
The drop-down armrest can be easily fitted on either the left- or right-hand side. They can be retrofitted to any of the existing Configura Comfort chairs and come in Duratek fabric or vinyl.
The Configura Dropdown Armrests facilitate seamless side transfers onto a wheelchair, commode, bed, etc.
When mounting the Configura drop-down armrest for promoting side transfers, we recommend that you set the chair rise angle to 2 degrees, so you can get the chair to the same height of the wheelchair, commode, bed etc. then lower the armrest and commence with the seamless side transfer.
Size: Medium & Large
Style: Black Vinyl fabric
Side: Left