Ralyn Shoe Stretch 3.5 fl. oz. Bottle. Shoe Stretch Liquid formula permanently stretches and softens shoes, boots and gloves made of leather, suede, or reptile skins. Professional-grade formula is designed to soften and permanently stretch all leathers, suede and nubuck. Softens even the stiffest leathers. Provides relief from tight shoes, boots, gloves, etc.