{"product_id":"maglia-intima-donna-senza-maniche-castelli-cold-days-2nd-nero","title":"Castelli Cold Days 2nd women sleeveless base layer - Black","description":"\u003ch3\u003eCastelli Cold Days 2nd women sleeveless base layer: advanced insulation for winter cycling\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb\u003eCastelli Cold Days 2nd women sleeveless base layer\u003c\/b\u003e is an innovative solution for those who practice \u003cstrong\u003ecycling in cold conditions\u003c\/strong\u003e. Made with \u003cstrong\u003ePolartec® Alpha® 90\u003c\/strong\u003e, an active insulating fabric in recycled PET, this Jersey delivers superior thermal performance without adding excessive weight. Unlike traditional technical base layers, Polartec® Alpha® retains elasticity and softness, ensuring comfort during long rides on gravel and road. The high-loft structure of the fabric creates air chambers that trap body heat, providing a \u003cstrong\u003e5 °C increase in thermal comfort\u003c\/strong\u003e. This second layer proves especially effective when worn over a long-sleeve technical base layer, creating an optimal combination for riding in sub-zero temperatures.\u003c\/p\u003e\n\u003ch3\u003eErgonomic design and versatile use\u003c\/h3\u003e\n\u003cp\u003eThe design of the Jersey was developed with the specific needs of cyclists in mind. The \u003cstrong\u003ehalf zip\u003c\/strong\u003e positioned slightly off-center reduces bulk in the neck area, avoiding annoying fabric build-up. This solution allows you to regulate ventilation without creating extra volume in the lower torso area. The \u003cstrong\u003eclose fit\u003c\/strong\u003e allows the Jersey to be worn either inside or outside the Bib tight, adapting to different personal preferences. Compatibility with technical base layers such as Flanders, Bandito, Miracolo and Seamless expands pairing possibilities, allowing cyclists to customize their thermal layering system according to weather conditions and individual preferences.\u003c\/p\u003e\n\u003ch3\u003eThermal performance and environmental sustainability\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003emaximum breathability\u003c\/strong\u003e of Polartec® Alpha® 90 ensures that moisture generated during physical effort is effectively dispersed, preventing the sticky feeling typical of other insulations. The fabric, made from \u003cstrong\u003erecycled PET\u003c\/strong\u003e, represents an environmentally conscious choice, reducing the ecological impact of production. Polartec® Alpha®'s active insulation technology works in synergy with the body's natural thermoregulation systems, retaining warmth without compromising breathability. This makes the Jersey ideal for \u003cstrong\u003elong winter rides\u003c\/strong\u003e, where moisture management is crucial to maintain comfort and prevent hypothermia.\u003c\/p\u003e\n\u003ch3\u003eTechnical features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePolartec® Alpha® 90 high-loft\u003c\/strong\u003e fabric in recycled PET.\u003c\/li\u003e\n\u003cli\u003eThermal increase of 5 °C compared with standard base layers.\u003c\/li\u003e\n\u003cli\u003eHalf zip with off-center placement to reduce bulk.\u003c\/li\u003e\n\u003cli\u003eClose-to-body fit.\u003c\/li\u003e\n\u003cli\u003eMaximum \u003cstrong\u003ebreathability\u003c\/strong\u003e and moisture management.\u003c\/li\u003e\n\u003cli\u003eCompatible with long-sleeve technical base layers.\u003c\/li\u003e\n\u003cli\u003eSuitable for \u003cstrong\u003egravel and road cycling\u003c\/strong\u003e in cold conditions.\u003c\/li\u003e\n\u003cli\u003eStretch fabric for freedom of movement.\u003c\/li\u003e\n\u003cli\u003eSleeveless for versatile use.\u003c\/li\u003e\n\u003cli\u003eActive insulation for superior thermal performance.\u003c\/li\u003e\n\u003cli\u003eColor: Black.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castelli","offers":[{"title":"XS \/ Black","offer_id":54483778699610,"sku":"4526546-010-XS","price":100.0,"currency_code":"EUR","in_stock":true},{"title":"S \/ Black","offer_id":54483778732378,"sku":"4526546-010-S","price":100.0,"currency_code":"EUR","in_stock":true},{"title":"M \/ Black","offer_id":54483778765146,"sku":"4526546-010-M","price":100.0,"currency_code":"EUR","in_stock":true},{"title":"L \/ Black","offer_id":54483778797914,"sku":"4526546-010-L","price":100.0,"currency_code":"EUR","in_stock":true},{"title":"XL \/ Black","offer_id":54483778830682,"sku":"4526546-010-XL","price":100.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/7139\/6534\/files\/Maglia-intima-donna-senza-maniche-Castelli-Cold-90.jpg?v=1785351797","url":"https:\/\/www.all4cycling.com\/en\/products\/maglia-intima-donna-senza-maniche-castelli-cold-days-2nd-nero","provider":"All4cycling ","version":"1.0","type":"link"}