Padded Arm Troughs with padded contour sides provide a fully padded trough to hold the arm. 1" foam covered with black sturdy vinyl on the base with 1/2" foam covered with wipeable covered neoprene sides. Available in multiple widths and lengths. The tube attachment connects permanently to armrest tube after the armpad is removed. Tube attachment accomodates 7/8", 1" & 1-1/8" tubing.