從下麵這個網頁看,視鞋帶孔多少,鞋帶長度不一,7對孔可達1米4:
https://product.suning.com/0071314137/12223313757.html?safp=d488778a.13701.productWrap.27&safc=prd.0.0&safpn=10007.373503
下麵這個網頁測試鞋帶承重,記者說用的是胡同款回力鞋,有7對孔,拉伸後達1米6:
https://www.sohu.com/a/636256355_121284943