Mobility and Daily Living Aids Health & Household, Lifting Cushions, Medical Supplies & Equipment, Mobility Aids & Equipment AlexOrthopedic Foam Roller White 4″ X 36″ Review by RoomPony June 8, 2018 No Comments Used for muscle flexibility and strengthening. White Foam Roller. Cylindrical in shape. Made of Polyethylene foam. Size: 4″ x 36″ More White Foam Roller. Cylindrical in shape. Made of Polyethylene foam. Used for muscle flexibility and strengthening.