{"product_id":"merino-250-half-zip-base-layer-top-womens","title":"REI Co-op Merino 250 Half-Zip Base Layer Top - Women's","description":"\u003cp style=\"margin:1em 0\"\u003eOur warmest merino wool base layer top is made with 100% heavyweight 250 g\/m² merino wool that naturally wicks away sweat, resists odors and dries quickly. A close-to-body fit keeps it working efficiently, while thumbhole cuffs hold sleeves in place and underarm gussets allow easy movement.\u003c\/p\u003e\u003cp style=\"margin:1em 0\"\u003eA collar with half-zip neck lets you ventilate as needed, and shoulder seams are rolled forward to help prevent chafing under pack straps. It offers UPF 50+ sun protection and a shirttail hem, plus a locker loop for hanging to dry. Machine wash cold with wool wash product, do not twist or wring, remove promptly; do not bleach; tumble dry low.\u003c\/p\u003e\n\u003ch3 style=\"margin:1.25em 0 0.5em\"\u003eKey Features\u003c\/h3\u003e\n\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:fixed;margin:0 0 1em\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eMultisport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eShirt Type\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003ePartial-zip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eFabric\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e100% merino wool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eSun-Protective Fabric\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eUPF Rating\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e50+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eMoisture Wicking\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eQuick Drying\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eUnderwear Weight\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eHeavyweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eSleeve Length\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eLong Sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eThumbholes\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eGender\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eWomen's\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top\"\u003eSustainability\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top\"\u003eFair Trade Certified™ Factory - From a Climate Label Certified brand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp style=\"margin:0\"\u003e\u003cimg src=\"https:\/\/public.cloud-dam.rei.com\/api\/public\/content\/f9f2a982d54d4991b67be83d8dfbb709\" alt=\"\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0\"\u003e\u003cimg src=\"https:\/\/www.rei.com\/dam\/c01_0809_how_to_choose_underwear_baselayers_lg.jpg\" alt=\"\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/p\u003e\n\u003ch3 style=\"margin:1.25em 0 0.5em\"\u003eHighlights\u003c\/h3\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003eHeavyweight 250 g\/m² merino wool offers a soft feel without the scratchiness\u003c\/li\u003e\n\u003cli\u003eMade with 100% merino wool that naturally wicks away sweat, resists odors and dries quickly\u003c\/li\u003e\n\u003cli\u003eUPF 50+ sun protection\u003c\/li\u003e\n\u003cli\u003eCollar with half-zip neck lets you ventilate as needed\u003c\/li\u003e\n\u003cli\u003eThumbhole cuffs hold sleeves in place and help seal warmth in\u003c\/li\u003e\n\u003cli\u003eUnderarm gussets are made for ease of movement\u003c\/li\u003e\n\u003cli\u003eShoulder seams are rolled forward to help prevent chafing under pack straps\u003c\/li\u003e\n\u003cli\u003eClose-to-body fit for optimum performance\u003c\/li\u003e\n\u003cli\u003eShirttail hem\u003c\/li\u003e\n\u003cli\u003eWeight for size S: 8.8 oz. (250 g)\u003c\/li\u003e\n\u003cli\u003eLocker loop makes it easy to hang this shirt to dry or just keep it off the ground\u003c\/li\u003e\n\u003cli\u003eMachine wash cold, use wool wash product, do not twist or wring, remove promptly; do not bleach; tumble dry low\u003c\/li\u003e\n\u003cli\u003eMade in a Fair Trade Certified™ factory\u003c\/li\u003e\n\u003cli\u003eREI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:1.25em 0 0.5em\"\u003eMaterials \u0026amp; care\u003c\/h3\u003e\nMachine wash cold, use wool wash product, do not twist or wring, remove promptly; do not bleach; tumble dry low\n\u003ch3 style=\"margin:1.25em 0 0.5em\"\u003eSizing \u0026amp; fit\u003c\/h3\u003e\nClose-to-body fit for optimum performance\n\u003ch3 style=\"margin:1.25em 0 0.5em\"\u003eHow to use\u003c\/h3\u003e\n\u003cp style=\"margin:1em 0\"\u003e\u003cstrong\u003eWhich material is best?\u003c\/strong\u003e\u003c\/p\u003e\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWool:\u003c\/strong\u003e highly moisture-wicking and odor-resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSynthetic:\u003c\/strong\u003e durable and less expensive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilk:\u003c\/strong\u003e soft and lightweight for casual activities\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin:1em 0\"\u003e\u003cstrong\u003eMatch the temp to the trek\u003c\/strong\u003e\u003c\/p\u003e\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight layers:\u003c\/strong\u003e best for moderate to cool temperatures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMidweight layers\u003c\/strong\u003e: best for cold temperatures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavyweight layers:\u003c\/strong\u003e best for below-freezing temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin:1em 0\"\u003e\u003cstrong\u003eFind your fit\u003c\/strong\u003e\u003c\/p\u003e\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003eMust be close to skin to efficiently wick sweat; should fit comfortably snug\u003c\/li\u003e\n\u003cli\u003eBase layer is for moisture control; your mid layer is for warmth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:1em 0\"\u003eFrom feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.\u003c\/p\u003e\n\u003cp style=\"margin:1em 0\"\u003eMade in a Fair Trade Certified™ factory. REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world.\u003c\/p\u003e\n\u003cp style=\"margin:1em 0\"\u003eLoading Questions...\u003c\/p\u003e","brand":"REI Co-op","offers":[{"title":"Black \/ XS","offer_id":67861193031907,"sku":"C099940001","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ S","offer_id":67861193064675,"sku":"C099940002","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ M","offer_id":67861193097443,"sku":"C099940003","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":67861193130211,"sku":"C099940004","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ XL","offer_id":67861193162979,"sku":"C099940005","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ 1X","offer_id":67861193195747,"sku":"C099940006","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2X","offer_id":67861193228515,"sku":"C099940007","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ 3X","offer_id":67861193261283,"sku":"C099940008","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ XS","offer_id":67861193294051,"sku":"C099940009","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ S","offer_id":67861193326819,"sku":"C099940010","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ M","offer_id":67861193359587,"sku":"C099940011","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ L","offer_id":67861193392355,"sku":"C099940012","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ XL","offer_id":67861193425123,"sku":"C099940013","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ 1X","offer_id":67861193457891,"sku":"C099940014","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ 2X","offer_id":67861193490659,"sku":"C099940015","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Hemlock Green \/ 3X","offer_id":67861193523427,"sku":"C099940016","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ XS","offer_id":67861193556195,"sku":"C099940017","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ S","offer_id":67861193588963,"sku":"C099940018","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ M","offer_id":67861193621731,"sku":"C099940019","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ L","offer_id":67861193654499,"sku":"C099940020","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ XL","offer_id":67861193687267,"sku":"C099940021","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ 1X","offer_id":67861193720035,"sku":"C099940022","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ 2X","offer_id":67861193752803,"sku":"C099940023","price":86.86,"currency_code":"USD","in_stock":true},{"title":"Horizon Purple \/ 3X","offer_id":67861193785571,"sku":"C099940024","price":86.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/0971\/1331\/files\/a8b064693932faea09fc13de20a5e6b9e31fa97a.jpg?v=1793513855","url":"https:\/\/www.bestdeal999.com\/products\/merino-250-half-zip-base-layer-top-womens","provider":"Best Deal 999","version":"1.0","type":"link"}