{"product_id":"opus-88-demo-fountain-pen-yellow","title":"Opus 88 Demo Fountain Pen - 2021 Yellow","description":"\u003ch5 data-path-to-node=\"0\"\u003e\u003ca href=\"https:\/\/www.penboutique.mom\/blogs\/blog\/opus-88-eye-catching-eye-droppers\"\u003e\u003ch5 data-path-to-node=\"0\"\u003e\n\u003ca href=\"https:\/\/www.penboutique.mom\/blogs\/blog\/opus-88-eye-catching-eye-droppers\"\u003eRead Blog | \u003c\/a\u003e\u003ca href=\"https:\/\/www.instagram.com\/p\/DYMwNFpJX6Q\/\"\u003eWatch Instagram Story I\u003c\/a\u003e\n\u003c\/h5\u003e\u003c\/a\u003e\u003c\/h5\u003e\u003cp data-path-to-node=\"0\"\u003eThe \u003cb data-path-to-node=\"0\" data-index-in-node=\"4\"\u003eOpus 88 Demo 2021 Yellow Fountain Pen\u003c\/b\u003e is a vibrant, high-capacity writing instrument that celebrates the Pantone 2021 Color of the Year, \"Illuminating.\" Known for its oversized presence and \"Japanese-style\" eyedropper engineering, this pen is a favorite among enthusiasts who want to see their ink sloshing inside a crystal-clear, sun-drenched barrel.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e\u003cstrong\u003e✨ Signature Features: The Sunlit Demonstrator\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"3\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,0,0\"\u003e\u003cb data-path-to-node=\"3,0,0\" data-index-in-node=\"0\"\u003e2021 Yellow Edition:\u003c\/b\u003e Crafted from high-grade transparent yellow resin, this pen captures the \"warming yellow shade imbued with solar power.\" It is accented with \u003cb data-path-to-node=\"3,0,0\" data-index-in-node=\"161\"\u003echrome trim\u003c\/b\u003e and a grey blind cap and finial, reflecting the Pantone 2021 \"Ultimate Grey\" pairing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,1,0\"\u003e\u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"0\"\u003eMassive Eyedropper Capacity:\u003c\/b\u003e The entire barrel serves as an ink reservoir, holding approximately \u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"97\"\u003e3.5ml to 4ml of ink\u003c\/b\u003e—dwarfing standard cartridges and converters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,2,0\"\u003e\u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"0\"\u003eShut-Off Valve System:\u003c\/b\u003e A signature Opus 88 feature, the ebonite center rod acts as a shut-off valve. When screwed down, it seals the feed from the barrel, preventing leaks and \"burping\" caused by air expansion during travel or temperature changes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,3,0\"\u003e\u003cb data-path-to-node=\"3,3,0\" data-index-in-node=\"0\"\u003ePremium Jowo #6 Steel Nib:\u003c\/b\u003e Equipped with a dependable German-made stainless steel nib that offers a smooth, consistent flow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,4,0\"\u003e\u003cb data-path-to-node=\"3,4,0\" data-index-in-node=\"0\"\u003eExtensive Nib Selection:\u003c\/b\u003e This limited edition offers a size for every hand, including the crisp \u003cb data-path-to-node=\"3,4,0\" data-index-in-node=\"96\"\u003eStub 1.5\u003c\/b\u003e for calligraphy and the sought-after \u003cb data-path-to-node=\"3,4,0\" data-index-in-node=\"142\"\u003eFlex Fine\u003c\/b\u003e and \u003cb data-path-to-node=\"3,4,0\" data-index-in-node=\"156\"\u003eFlex Extra Fine\u003c\/b\u003e for vintage-style line variation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cstrong\u003e🖋️ Experience \u0026amp; Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eConstruction:\u003c\/b\u003e Precision-turned acrylic resin with metal copper and ebonite internal components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eWeight \u0026amp; Balance:\u003c\/b\u003e At \u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"21\"\u003e27g\u003c\/b\u003e, the pen feels substantial but balanced. Note that it is \u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"82\"\u003enon-postable\u003c\/b\u003e (the cap does not sit on the back), maintaining its clean, architectural lines while writing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eFilling Mechanism:\u003c\/b\u003e Authentic eyedropper (includes a glass dropper in the box).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eCap Mechanism:\u003c\/b\u003e Secure \u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"22\"\u003escrew-on cap\u003c\/b\u003e (requires approximately 3.5 turns) to ensure an airtight seal and prevent the nib from drying out.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cstrong\u003eWhy Choose Opus 88 Demo Pen?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eThe \u003cb data-path-to-node=\"8\" data-index-in-node=\"4\"\u003eOpus 88 Demo 2021 Yellow\u003c\/b\u003e is for the writer who views ink as an art form. The transparent yellow body transforms based on the ink you choose—imagine a deep orange ink creating a glowing sunset effect or a teal ink for a striking contrast. It is a \u003cb data-path-to-node=\"8\" data-index-in-node=\"250\"\u003e\"personality pen\"\u003c\/b\u003e that offers the best ink-to-weight ratio on the market, backed by a leak-proof valve system that makes it a practical travel companion despite its massive capacity.\u003c\/p\u003e\n\u003cblockquote data-path-to-node=\"11\"\u003e\n\u003cp data-path-to-node=\"11,0\"\u003e\"The 2021 Yellow Demo is essentially 'joy in a pen.' The transparency is so crisp that you can see every detail of the shut-off valve and the nib assembly. If you love long writing sessions, the \u003cb data-path-to-node=\"11,0\" data-index-in-node=\"195\"\u003eFlex Extra Fine\u003c\/b\u003e nib is a dream—it gives you that expressive 'bounce' without the maintenance of a vintage gold nib. \u003cb data-path-to-node=\"11,0\" data-index-in-node=\"311\"\u003ePro tip:\u003c\/b\u003e For the best visual effect, use a high-shading ink. The way a shading ink looks through that yellow-tinted resin is absolutely mesmerizing, like looking at liquid stained glass.\"\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Opus 88","offers":[{"title":"Extra Fine","offer_id":39659293048950,"sku":"O_96086521-EF","price":120.0,"currency_code":"USD","in_stock":true},{"title":"Fine","offer_id":39659290525814,"sku":"O_96086521-F","price":120.0,"currency_code":"USD","in_stock":true},{"title":"Medium","offer_id":39659290558582,"sku":"O_96086521-M","price":120.0,"currency_code":"USD","in_stock":true},{"title":"Broad","offer_id":39659290591350,"sku":"O_96086521-B","price":120.0,"currency_code":"USD","in_stock":false},{"title":"Stub (1.5mm)","offer_id":39659290624118,"sku":"O_96086521-1.5","price":120.0,"currency_code":"USD","in_stock":true},{"title":"Flex Extra Fine","offer_id":39659290656886,"sku":"O_96086521-FL EF","price":120.0,"currency_code":"USD","in_stock":true},{"title":"Flex Fine","offer_id":39659290689654,"sku":"O_96086521-FL F","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0046\/3421\/4518\/files\/8W6A0692_2.jpg?v=1778176872","url":"https:\/\/www.penboutique.mom\/products\/opus-88-demo-fountain-pen-yellow","provider":"Pen Boutique Ltd ","version":"1.0","type":"link"}