<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.fitness.cz/insportline/sport/cyklistika/detska-kola/detska-kola-14/detske-kolo-dhs-countess-1402-14-model-2016-s554075904>