This pad set was designed and made extra strong with abrasion-resistant nylon. durable plastic caps. neoprene stretch panels. and comfy EVA padding. The knee pads come with a hook and loop closure system so there's no need to take off your shoes to slip them over your feet. The set comes in a reusable mesh bag to help keep them all together when not in use. Also creating less of that wasteful packaging. being better for the environment.