{"product_id":"pinne-in-plastica-c4-umberto-pelizzari-sideral","title":"Umberto Pelizzari Fins - Sideral","description":"\u003ch2\u003eUP C4 Fins in collaboration with Umberto Pelizzari\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eUP C4 fins\u003c\/strong\u003e are designed specifically for freediving and spearfishing, combining strength and ergonomic comfort with high-quality Italian design. Made with selected materials, these fins feature high-visibility luminescent colors in the water, essential for recognition during dives.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical features and materials\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eblades\u003c\/strong\u003e are made of plastic with finishes that recall carbon fiber weaves, delivering a technical and functional aesthetic. The blade surface is divided into a smooth, glossy central section and two side sections with a carbon fiber pattern, while the rear features contrasting finishes to optimize thrust transmission.\u003c\/p\u003e\n\u003cp\u003eThe blade’s variable geometry is designed to:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eprotect the area near the foot\u003c\/li\u003e\n  \u003cli\u003eprevent load loss along the entire length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003ewater rails\u003c\/strong\u003e in thermorubber are overmolded at high pressure and temperature, improving water channeling and grip during the fin stroke.\u003c\/p\u003e\n\n\u003ch3\u003eFoot pocket ergonomics and efficiency\u003c\/h3\u003e\n\u003cp\u003eThe fins are fitted with the \u003cstrong\u003e250\u003c\/strong\u003e foot pocket, pre-shaped with a 3° angle and made from a soft, adaptable plastic material to ensure comfort and a perfect fit. The rigid insole effectively transfers energy from the foot to the blade, increasing thrust efficiency during the dive.\u003c\/p\u003e\n\u003cp\u003eThe overall fin-foot pocket angle is 32°, optimal for a fluid and responsive fin stroke in freediving and spearfishing.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBlade dimensions: 795 x 625 mm\u003c\/li\u003e\n  \u003cli\u003eComplete fin dimensions: 910 x 625 mm\u003c\/li\u003e\n  \u003cli\u003eBlade Stiffness: Soft – value 25\u003c\/li\u003e\n  \u003cli\u003eAvailable in 7 sizes: 36\/37, 38\/39, 40\/41, 41\/42, 42\/43, 43\/44, 44\/45\u003c\/li\u003e\n  \u003cli\u003e100% Italian origin\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications and benefits\u003c\/h3\u003e\n\u003cp\u003eThese fins deliver precise, responsive thrust transmission thanks to the combination of soft yet durable materials and the advanced blade geometry. Their light weight and hydrodynamic efficiency improve comfort and fluidity of the fin stroke, essential for freediving and spearfishing.\u003c\/p\u003e","brand":"C4","offers":[{"title":"36-37","offer_id":56926820139353,"sku":"0PC4UPS36SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"38-39","offer_id":56926820172121,"sku":"0PC4UPS38SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"39-40","offer_id":57023597379929,"sku":"0PC4UPS39SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"40-41","offer_id":56926820204889,"sku":"0PC4UPS40SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"41-42","offer_id":56926820237657,"sku":"0PC4UPS41SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"42-43","offer_id":56926820270425,"sku":"0PC4UPS42SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"43-44","offer_id":56926820303193,"sku":"0PC4UPS43SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"44-45","offer_id":56926820335961,"sku":"0PC4UPS44SCK","price":109.0,"currency_code":"EUR","in_stock":true},{"title":"46-47","offer_id":56926820106585,"sku":"0PC4UPS46SCK","price":109.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/6732\/1945\/files\/C4_23_Pinna-UP-SIDERAL-Fronte_WEB.png?v=1766639803","url":"https:\/\/deepbluesub.com\/en\/products\/c4-umberto-pelizzari-sideral-plastic-fins","provider":"DEEP BLUE - Freediving \u0026 Spearfishing","version":"1.0","type":"link"}