{"product_id":"ruckenstrecker-vision-fitness-keystone","title":"Back Extension - Vision Fitness","description":"\u003ch2\u003e\u003cstrong\u003eBack Extension- Vision Fitness\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eKeystone Back Extension\u003c\/strong\u003e by Vision Fitness specifically strengthens the lower back muscles – precise positioning geometry, moisture-resistant upholstery, and a welded steel frame for performance and durability in continuous operation. Low weight stack height, back-to-back configuration, and ergonomic padding make it the ideal solution for high-traffic fitness facilities.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTargeted lower back isolation – precise body positioning geometry for correct posture\u003c\/li\u003e\n\u003cli\u003e3 user starting options for flexible adjustment to different body sizes\u003c\/li\u003e\n\u003cli\u003eContoured seat \u0026amp; footrest for maximum stability during exercise\u003c\/li\u003e\n\u003cli\u003eColor-coded pivot points and adjustment points for quick, intuitive adjustment\u003c\/li\u003e\n\u003cli\u003eMoisture-resistant polyurethane molded foam upholstery – durable and hygienic\u003c\/li\u003e\n\u003cli\u003eWelded steel frame with proprietary two-layer powder coating process in Matte Black\u003c\/li\u003e\n\u003cli\u003eOpen frame with non-slip storage tray \u0026amp; device holder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eWeight Stack\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTotal stack weight: 73 kg \u003c\/li\u003e\n\u003cli\u003eMax. training weight: 75.3 kg (incl. additional weight)\u003c\/li\u003e\n\u003cli\u003eWeight plate increments: 5 kg \u003c\/li\u003e\n\u003cli\u003eComplete front and back protective shrouds\u003c\/li\u003e\n\u003cli\u003eUniform stack height: 155 cm \u003c\/li\u003e\n\u003cli\u003eBack-to-back configuration possible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFeatures \u0026amp; Adjustments\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTactile storage mats \u0026amp; holder for personal devices\u003c\/li\u003e\n\u003cli\u003eInstructional placards with muscle group markings, start\/end position illustrations, and QR code link to instruction videos\u003c\/li\u003e\n\u003cli\u003eInternally lubricated cables and fittings\u003c\/li\u003e\n\u003cli\u003eMachine anchoring points available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDimensions: 124 x 112 x 155 cm \u003c\/li\u003e\n\u003cli\u003eMax. in-use dimensions: 128 x 112 x 155 cm\u003c\/li\u003e\n\u003cli\u003eProduct weight: 194.2 kg \u003c\/li\u003e\n\u003cli\u003eFrame color: Matte Black\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Vision Fitness","offers":[{"title":"Default Title","offer_id":55082610229577,"sku":"MS-V-KEY-SL-52","price":3528.57,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/4896\/6217\/files\/Back_Extension_-_Vision_Fitness_main.png?v=1787754719","url":"https:\/\/mutiunsports.com\/en-li\/products\/ruckenstrecker-vision-fitness-keystone","provider":"motion sports","version":"1.0","type":"link"}