{"product_id":"os1st-thin-air-performance-calf-sleeves","title":"OS1st Thin AIR performance Calf Sleeves","description":"\u003ch2 data-start=\"247\" data-end=\"284\"\u003eOS1st Thin AIR Performance Calf Sleeves\u003c\/h2\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a127d0c6-c3b6-45ad-b7aa-82a807275da3\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-6-thinking\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"12\" data-end=\"320\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong data-start=\"16\" data-end=\"63\"\u003eOS1st TA6 Thin Air Performance Calf Sleeves\u003c\/strong\u003e are designed to deliver lightweight support, cooling comfort, and protection during activity and recovery. Made with advanced medical-grade manufacturing technology, they provide a thin, breathable fit without sacrificing durability or compression support.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"322\" data-end=\"573\"\u003eThe specialized \u003cstrong data-start=\"338\" data-end=\"364\"\u003eThin Skin construction\u003c\/strong\u003e increases airflow around the legs, helping create a cooling effect during exercise or when worn under clothing. Their targeted compression supports circulation, muscle recovery, and overall lower-leg comfort.\u003c\/p\u003e\n\u003ch3 data-section-id=\"f8hhdl\" data-start=\"575\" data-end=\"595\"\u003eTargeted Support\u003c\/h3\u003e\n\u003cul data-start=\"597\" data-end=\"835\"\u003e\n\u003cli data-section-id=\"1di5xrk\" data-start=\"597\" data-end=\"624\"\u003eHelps boost circulation\u003c\/li\u003e\n\u003cli data-section-id=\"158tb87\" data-start=\"625\" data-end=\"646\"\u003eSupports recovery\u003c\/li\u003e\n\u003cli data-section-id=\"1o3pzaw\" data-start=\"647\" data-end=\"676\"\u003eHelps relieve calf cramps\u003c\/li\u003e\n\u003cli data-section-id=\"1p6vq5h\" data-start=\"677\" data-end=\"706\"\u003eProvides muscular support\u003c\/li\u003e\n\u003cli data-section-id=\"1m4f8md\" data-start=\"707\" data-end=\"759\"\u003eSupports discomfort associated with shin splints\u003c\/li\u003e\n\u003cli data-section-id=\"11s3o1q\" data-start=\"760\" data-end=\"795\"\u003eHelps support the Achilles area\u003c\/li\u003e\n\u003cli data-section-id=\"14lwbs3\" data-start=\"796\" data-end=\"835\"\u003eReduces overheating during activity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"3u2fmh\" data-start=\"837\" data-end=\"861\"\u003ePerformance Features\u003c\/h3\u003e\n\u003cul data-start=\"863\" data-end=\"1158\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1wknqpb\" data-start=\"863\" data-end=\"903\"\u003eLightweight, ultra-thin construction\u003c\/li\u003e\n\u003cli data-section-id=\"1c4v14k\" data-start=\"904\" data-end=\"946\"\u003eBreathable zones for increased airflow\u003c\/li\u003e\n\u003cli data-section-id=\"10z5rab\" data-start=\"947\" data-end=\"979\"\u003eCooling feel during activity\u003c\/li\u003e\n\u003cli data-section-id=\"156lz3l\" data-start=\"980\" data-end=\"995\"\u003eEasy-on fit\u003c\/li\u003e\n\u003cli data-section-id=\"1cejg7u\" data-start=\"996\" data-end=\"1033\"\u003eMedical-grade compression support\u003c\/li\u003e\n\u003cli data-section-id=\"c9hi67\" data-start=\"1034\" data-end=\"1086\"\u003eSuitable for training, competition, and recovery\u003c\/li\u003e\n\u003cli data-section-id=\"1izu09b\" data-start=\"1087\" data-end=\"1158\" data-is-last-node=\"\"\u003eCan be worn alone or paired with OS1st TA4 Thin Air Performance Socks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\n\u003cdiv class=\"mx-auto\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"inline-flex rounded-xl border border-gray-100 dark:border-gray-700\"\u003e\n\u003cdiv class=\"me-12 flex items-center px-4 py-3 text-start\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" class=\"icon-lg text-token-main-surface-primary-inverse\"\u003e\u003cuse fill=\"currentColor\" 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