Quickform Thumb Support Short XS-XXL (99S) An economical thumb support with a removable, custom moldable plastic insert. Simply heat the insert in hot water, replace in the brace, and mold to the hand. The result is a custom plastic molded thumb support in a very short period of time, at a very economical price. Available in 3mm Neoprene (for warmth) or latex-free Coolcel, Ortho Active’s lightweight, latex-free, Neoprene alternative. Side: RightLeft Sizing: SizeWrist Circumference S 5″ – 6″ M 6″ – 7″ L 7″ – 8″