Medline Industries Guardian® Quick-Fit® Child Adjustable Auxiliary Crutches, 31-1/2" to 37-1/2" Adjustment Range, 3ft 9" to 4ft 7" Adjustable User Height, with Push Button Adjusted Foot Piece with Fitting GuideGuardian® Quick-Fit® Crutches come with a bolt adjusted handle and push-button, adjusted foot pieces with fitting scale that allows for an accurate fitting. One inch adjustment increments on both handle and height provide a precise fit which reduces muscle fatigue.