McKesson Reusable Cold and Hot Pack, 4¾ x 6 Inch, 1 Case of 24 Toilet Guard Rails s easy height adjustment * Furnishing Accessories s easy height adjustment * Includes Standard Handgrips * Weight capacity 333 lbs * Directional Casters align the rear casters to track in a straight line to assist the user in controlling the direction of the EVA Walker * Step ON for directional tracking Step OFF unlocks the directional tracking * NOTE: Caster locks are only on the front casters on models with Directional Casters X Large * Fit's Men's shoe sizes 11 The 4¾ x 6 inch gel pack conforms to contours around joints and other areas to provide adequate pain treatment to ensure it stays flexible