{"product_id":"tonifins","title":"Swimming fins - Tonifin","description":"\u003cp\u003eOur design teams developed these swimming fins for swimmers who want to build up muscle on the back of their legs and buttocks.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch4\u003eWhat are swimming fins used for?\u003c\/h4\u003e\u003cp\u003eSwimming fins are training accessories that help to make your muscles work harder in the lower body. The efforts you make when exercising will improve your heart rate and strengthen your abdominals and your lower body (thighs, glutes, calves). The efforts you make when swimming with fins burn up fat and tone up your body shape.\u003c\/p\u003e\u003ch4\u003eA Decathlon innovation\u003c\/h4\u003e\u003cp\u003eA lot of female swimmers use swimming fins to strengthen their legs. Conventional fins focus the effort on the quadriceps and the hamstrings and buttocks work very little.\n\nWe designed these pool fins with a blade at a 38° angle to strengthen these muscles by increasing resistance when the fin moves upwards and decreasing the effort as the fin moves downwards.\u003c\/p\u003e\u003ch4\u003eFin length\u003c\/h4\u003e\u003cp\u003eThe TONIFINS are long fins.\n- 36-37: 36.5 cm\n- 38-39: 39 cm\n- 40-41: 41.5 cm\n\nSHORT blade guarantees a good kick frequency and a good cardio workout. Movements are very close to “natural” swimming movements.\nThe LONG blade guarantees a more sweeping kick and a stronger muscle workout.\nThe long blade of the TONIFINS fins makes the target muscles work harder.\u003c\/p\u003e\u003ch4\u003eFin stiffness\u003c\/h4\u003e\u003cp\u003eThe TONIFINS are semi-rigid fins.\n\nStiffness is characterised by the density of matter. As such, the stiffer a blade is, the greater muscular exertion will be. The more flexible a blade is, the more efficient and sweeping the kick will be. How hard you kick will depend on the type of workout you want to achieve (cardiovascular or muscle).\u003c\/p\u003e\u003ch4\u003eFootwear\u003c\/h4\u003e\u003cp\u003eThe TONIFINS fins have open foot pockets.\n\nFin foot pockets hold the foot in place when kicking (important for an efficient kick).\nOpen foot pockets allow for greater freedom of movement for your ankles.\nClosed foot pockets hold your feet in their natural position.\u003c\/p\u003e\u003ch4\u003eSWIMMING FIN FOOT POCKETS\u003c\/h4\u003e\u003cp\u003eThe TONIFINS fins have open foot pockets.\n\nThe foot pockets provide strong foot support when kicking with the fins. They are an important part of pool fins, because they guarantee a more efficient kick.\nOpen foot pockets allow for greater freedom of movement for your ankles.\nClosed foot pockets hold your feet in their natural position.\nThe open foot pockets of the TONIFINS fins provide firm support and greater freedom of movement.\u003c\/p\u003e\u003cp\u003eThese long, semi-rigid swimming fins have an innovative blade at a 38° angle that increases muscle work of the hamstrings and glutes.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"grid__item large--one-half medium--one-half productFeature productFeature--easy-to-breathe\"\u003e\u003cdiv class=\"grid--full\"\u003e\u003cdiv class=\"grid__item one-fifth productFeature-icon\"\u003e\u003cimg class=\"productFeature-image\" src=\"\" data-src=\"https:\/\/contents.mediadecathlon.com\/b72596\/pic.jpg\"\u003e\u003c\/div\u003e\u003cdiv class=\"grid__item four-fifths productFeature-content\"\u003e\u003ch5 class=\"productFeature-title\"\u003ePropulsion\u003c\/h5\u003e\u003cp class=\"productFeature-description\"\u003eImprove your propulsion in the water thanks to the long blades of these fins.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"grid__item large--one-half medium--one-half productFeature productFeature--easy-to-breathe\"\u003e\u003cdiv class=\"grid--full\"\u003e\u003cdiv class=\"grid__item one-fifth productFeature-icon\"\u003e\u003cimg class=\"productFeature-image\" src=\"\" data-src=\"https:\/\/contents.mediadecathlon.com\/b65329\/pic.jpg\"\u003e\u003c\/div\u003e\u003cdiv class=\"grid__item four-fifths productFeature-content\"\u003e\u003ch5 class=\"productFeature-title\"\u003eMuscular workout\u003c\/h5\u003e\u003cp class=\"productFeature-description\"\u003eStrengthen hamstrings and glutes thanks to the 38° angle of the fin blades\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003eOur design teams developed these swimming fins for swimmers who want to build up muscle on the back of their legs and buttocks.\u003c\/p\u003e","brand":"DECATHLON","offers":[{"title":"8650217 \/ UK 3-4 EU36-37 \/ أزرق اتلانتيس","offer_id":48380222963864,"sku":"4340236","price":155.0,"currency_code":"SAR","in_stock":false},{"title":"8650217 \/ UK 5-5.5 EU38-39 \/ أزرق اتلانتيس","offer_id":48380222996632,"sku":"4340237","price":155.0,"currency_code":"SAR","in_stock":true},{"title":"8650217 \/ UK 6.5-7 EU40-41 \/ أزرق اتلانتيس","offer_id":48380223029400,"sku":"4340238","price":155.0,"currency_code":"SAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/5707\/9704\/files\/pic_4b8c443f-ca42-4302-aeab-d412984d9f36.jpg?v=1773278208","url":"https:\/\/ar.decathlon.com.sa\/en\/products\/swimming-fins-tonifin","provider":"ديكاتلون السعودية","version":"1.0","type":"link"}