{"product_id":"polar-plunge-cold-tub","title":"Polar Plunge Cold Tub","description":"\u003cp\u003e\u003cstrong\u003ePurpose-built cold water therapy — the perfect contrast therapy partner.\u003c\/strong\u003e The Polar Plunge Cold Tub features a stainless steel interior, Western Red Cedar exterior, and an optional chiller unit for precise year-round temperature control. Pairs with any Summit Sauna or Canadian Timber outdoor sauna for a complete contrast therapy setup.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1–2 person capacity\u003c\/li\u003e\n\u003cli\u003eStainless steel interior — hygienic, easy to clean, no degradation\u003c\/li\u003e\n\u003cli\u003eWestern Red Cedar exterior — matches Canadian Timber outdoor saunas\u003c\/li\u003e\n\u003cli\u003eOptional integrated chiller — maintains 50–59°F year-round without ice\u003c\/li\u003e\n\u003cli\u003eTarget therapy temperature: 50–59°F (10–15°C) — optimal for norepinephrine and cold thermogenesis\u003c\/li\u003e\n\u003cli\u003eCedar cradle design — pairs visually with barrel sauna on shared gravel pad\u003c\/li\u003e\n\u003cli\u003e5-year structural warranty\u003c\/li\u003e\n\u003cli\u003eFreight delivery included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Contrast Therapy?\u003c\/h3\u003e\u003cp\u003eAlternating between sauna heat and cold immersion produces a vascular pumping effect that accelerates clearance of inflammatory markers and lactate from muscle tissue. Cold exposure triggers a norepinephrine release of up to 300% — one of the most reliable acute mood elevation mechanisms available. Sauna adds endorphins, growth hormone, and BDNF. The combined cascade from a single contrast session is meaningfully greater than either modality alone.\u003c\/p\u003e\u003ch3\u003eThe Chiller Option\u003c\/h3\u003e\u003cp\u003eWithout a chiller, maintaining cold therapy temperature requires ice — expensive, time-consuming, and inconsistent. The Polar Plunge's optional chiller unit maintains precise temperature automatically, year-round, with no ice management. For anyone using contrast therapy more than once a week, the chiller pays for itself in convenience within months.\u003c\/p\u003e","brand":"Summit Sauna Co.","offers":[{"title":"Without Chiller","offer_id":48023647944942,"sku":"POLAR-PLUNGE","price":3299.0,"currency_code":"USD","in_stock":true},{"title":"With Chiller","offer_id":48023647977710,"sku":"POLAR-PLUNGE-C","price":4499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/2814\/5646\/files\/photo-1571019613454-1cb2f99b2d8b_d694cdfa-181e-4bcc-98a3-ba61ccbc4c02.jpg?v=1779089929","url":"https:\/\/summitsaunaco.com\/products\/polar-plunge-cold-tub","provider":"Summit Sauna Co.","version":"1.0","type":"link"}