{"product_id":"bola-de-callos","title":"Callosmax","description":"\u003cp\u003eSmall callus ball designed to strengthen and harden fingers and hands. Ideal for athletes looking to improve their grip and endurance. Its compact size allows for training anywhere, perfect for daily exercise sessions. Progressively increases hand strength and improves muscle coordination.\u003c\/p\u003e","brand":"Ursa Grip","offers":[{"title":"Default Title","offer_id":60038223626574,"sku":null,"price":7.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/5538\/7982\/files\/WhatsAppImage2026-07-02at11.24.11_1.jpg?v=1783098489","url":"https:\/\/ursagrip.com\/en\/products\/bola-de-callos","provider":"Ursa Grip","version":"1.0","type":"link"}