[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"research-sidebar-rollups":3,"research-niche-us-health-household-xpolar-x2-smart-knee-recovery-device":144},[4,11,18,25,32,39,46,53,60,67,74,81,88,95,102,109,116,123,130,137],{"nodeId":5,"label":6,"slug":7,"href":8,"nichesTracked":9,"marketSizeTotal":10},"3760931","Health & Household","health-household","\u002Fresearch\u002Fus\u002Fhealth-household",15338,15205859393,{"nodeId":12,"label":13,"slug":14,"href":15,"nichesTracked":16,"marketSizeTotal":17},"11055981","Beauty & Personal Care","beauty-personal-care","\u002Fresearch\u002Fus\u002Fbeauty-personal-care",10978,8129370268,{"nodeId":19,"label":20,"slug":21,"href":22,"nichesTracked":23,"marketSizeTotal":24},"493964","Electronics","electronics","\u002Fresearch\u002Fus\u002Felectronics",8348,8093575873,{"nodeId":26,"label":27,"slug":28,"href":29,"nichesTracked":30,"marketSizeTotal":31},"1063498","Home & Kitchen","home-kitchen","\u002Fresearch\u002Fus\u002Fhome-kitchen",11250,6171847188,{"nodeId":33,"label":34,"slug":35,"href":36,"nichesTracked":37,"marketSizeTotal":38},"468240","Tools & Home Improvement","tools-home-improvement","\u002Fresearch\u002Fus\u002Ftools-home-improvement",9536,5679978000,{"nodeId":40,"label":41,"slug":42,"href":43,"nichesTracked":44,"marketSizeTotal":45},"3238155011","Patio, Lawn & Garden","patio-lawn-garden","\u002Fresearch\u002Fus\u002Fpatio-lawn-garden",8839,4979879539,{"nodeId":47,"label":48,"slug":49,"href":50,"nichesTracked":51,"marketSizeTotal":52},"7141124011","Clothing, Shoes & Jewelry","clothing-shoes-jewelry","\u002Fresearch\u002Fus\u002Fclothing-shoes-jewelry",16932,4054319330,{"nodeId":54,"label":55,"slug":56,"href":57,"nichesTracked":58,"marketSizeTotal":59},"3375301","Sports & Outdoors","sports-outdoors","\u002Fresearch\u002Fus\u002Fsports-outdoors",8101,3930668084,{"nodeId":61,"label":62,"slug":63,"href":64,"nichesTracked":65,"marketSizeTotal":66},"2619534011","Pet Supplies","pet-supplies","\u002Fresearch\u002Fus\u002Fpet-supplies",3979,3202071599,{"nodeId":68,"label":69,"slug":70,"href":71,"nichesTracked":72,"marketSizeTotal":73},"15690151","Automotive","automotive","\u002Fresearch\u002Fus\u002Fautomotive",7287,2959139927,{"nodeId":75,"label":76,"slug":77,"href":78,"nichesTracked":79,"marketSizeTotal":80},"165797011","Baby Products","baby-products","\u002Fresearch\u002Fus\u002Fbaby-products",2473,1858793879,{"nodeId":82,"label":83,"slug":84,"href":85,"nichesTracked":86,"marketSizeTotal":87},"2335753011","Cell Phones & Accessories","cell-phones-accessories","\u002Fresearch\u002Fus\u002Fcell-phones-accessories",2222,1674713279,{"nodeId":89,"label":90,"slug":91,"href":92,"nichesTracked":93,"marketSizeTotal":94},"165795011","Toys & Games","toys-games","\u002Fresearch\u002Fus\u002Ftoys-games",3143,1662205212,{"nodeId":96,"label":97,"slug":98,"href":99,"nichesTracked":100,"marketSizeTotal":101},"2617942011","Arts, Crafts & Sewing","arts-crafts-sewing","\u002Fresearch\u002Fus\u002Farts-crafts-sewing",4656,1471576936,{"nodeId":103,"label":104,"slug":105,"href":106,"nichesTracked":107,"marketSizeTotal":108},"2619526011","Appliances","appliances","\u002Fresearch\u002Fus\u002Fappliances",845,527166679,{"nodeId":110,"label":111,"slug":112,"href":113,"nichesTracked":114,"marketSizeTotal":115},"11965861","Musical Instruments","musical-instruments","\u002Fresearch\u002Fus\u002Fmusical-instruments",437,265480238,{"nodeId":117,"label":118,"slug":119,"href":120,"nichesTracked":121,"marketSizeTotal":122},"16310161","Industrial & Scientific","industrial-scientific","\u002Fresearch\u002Fus\u002Findustrial-scientific",262,260043081,{"nodeId":124,"label":125,"slug":126,"href":127,"nichesTracked":128,"marketSizeTotal":129},"1084128","Office Products","office-products","\u002Fresearch\u002Fus\u002Foffice-products",426,134456572,{"nodeId":131,"label":132,"slug":133,"href":134,"nichesTracked":135,"marketSizeTotal":136},"10304191","Other","other","\u002Fresearch\u002Fus\u002Fother",8,1511091,{"nodeId":138,"label":139,"slug":140,"href":141,"nichesTracked":142,"marketSizeTotal":143},"18981046011","Amazon Luxury","amazon-luxury","\u002Fresearch\u002Fus\u002Famazon-luxury",2,78675,{"amazonNicheId":145,"marketplaceFlag":146,"country":147,"category":150,"niche":151,"verdict":187,"baselines":222,"demand":227,"seasonality":233,"brandShare":234,"products":245,"feedback":282,"searchTerms":417,"related":432,"lastUpdated":170},"1886ccff-fee8-4042-8b1f-5e2f16e1f726","us",{"flag":146,"name":148,"currency":149},"United States","USD",{"nodeId":5,"label":6,"slug":7,"href":8},{"marketSize":152,"searchVolume":153,"growth360":154,"growth90":155,"searchConversion":156,"top5ClickShare":157,"top5BrandShare":157,"avgRating":158,"avgReviewCount":159,"avgPrice":160,"priceMin":161,"priceMax":162,"productCount":163,"unitsSoldMax":164,"sponsoredPct":157,"returnRate":165,"successfulLaunches360":157,"newProducts360":142,"amazonNicheId":145,"title":166,"slug":167,"href":168,"leafCategoryName":169,"scrapedAt":170,"brandCount":171,"brandCountYearAgo":157,"sellerCount":171,"signals":172,"avgBsr":178,"pageQuality":179,"unitsSoldMin":180,"unitsSoldAvgMin":179,"unitsSoldAvgMax":180,"revenueMin":181,"revenueMax":182,"avgBrandAgeMonths":183,"avgSellerAgeDays":184,"top20ClickShare":157,"top20BrandShare":157,"primePct":185,"oosRate":186},65192,9737,20.0302,0.1443,0.0237,1,3.97,37,282.5,146.31,411.72,4,250,0.1206,"xpolar x2 smart knee recovery device","xpolar-x2-smart-knee-recovery-device","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fxpolar-x2-smart-knee-recovery-device","Hot & Cold Therapies","2026-07-11T09:13:06.966759+00:00",3,[173,174,175,176,177],"quality_gap","high_returns","high_price","out_of_stock","low_review_barrier",22934,0,100,28250,70625,25,206,0.75,0.0769,{"score":188,"verdict":189,"components":190},28,"skip",[191,196,199,203,205,207,210,215,217,220],{"key":192,"score":193,"weight":194,"raw":195},"marketSize",16,0.15,65191.65,{"key":197,"score":198,"weight":194,"raw":155},"growth",43,{"key":200,"score":201,"weight":202,"raw":156},"conversion",30,0.1,{"key":204,"score":179,"weight":194,"raw":157},"competition",{"key":206,"score":179,"weight":202,"raw":157},"brandShare",{"key":208,"score":209,"weight":202,"raw":158},"qualityGap",95,{"key":211,"score":212,"weight":213,"raw":214},"reviewMoat",98,0.05,36.5,{"key":216,"score":179,"weight":202,"raw":165},"returns",{"key":218,"score":219,"weight":213,"raw":160},"avgPrice",33,{"key":221,"score":179,"weight":213,"raw":179},"priceRange",{"avgRating":223,"medianPrice":224,"medianReturnRate":225,"nichesTracked":226},4.42,24.38,0.0215,115062,{"points":228,"droppedPartialWeek":232},[229],{"week":230,"volume":231},"2026-07-05",295,false,null,{"top":235,"otherBrandCount":179,"otherClickShare":179},[236,239,242],{"brand":237,"clickShare":238},"XPOLAR",0.8829,{"brand":240,"clickShare":241},"Hyperice",0.0755,{"brand":243,"clickShare":244},"JIANHENG",0.0416,[246,256,266,274],{"asin":247,"title":248,"brand":237,"imageUrl":249,"price":250,"rating":251,"reviews":201,"clickShare90":252,"clickShare360":253,"launchDate":254,"amazonUrl":255},"B0D8BKPZQ7","XPOLAR X2 Smart Knee Recovery Device - Advanced Hot & Cold Contrast Therapy with Compression for Knee Pain Relief-Sports Recovery & Injury Rehab","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41wQOh+-jfL.jpg",335.34,4.1,0.7816,0.6104,"2024-12-12","https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB0D8BKPZQ7",{"asin":257,"title":258,"brand":237,"imageUrl":259,"price":161,"rating":260,"reviews":261,"clickShare90":262,"clickShare360":263,"launchDate":264,"amazonUrl":265},"B0DLKQX9MN","XPOLAR X Lite Recovery Wrap for Knee Shoulder Elbow and Ankle Cold and Hot Therapy for Muscle Relief and Inflammation Rechargeable & Portable Pain Recovery Device","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41rKJtMpB9L.jpg",3.8,5,0.1013,0.2105,"2024-11-07","https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB0DLKQX9MN",{"asin":267,"title":268,"brand":240,"imageUrl":269,"price":162,"rating":163,"reviews":270,"clickShare90":241,"clickShare360":271,"launchDate":272,"amazonUrl":273},"B0FC6YDYHL","Hyperice X 2 Knee Advanced Heat and Cold Contrast Therapy - Pain and Inflammation Relief - Provides Increased Range of Motion","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41CLPgMGWkL.jpg",111,0.1558,"2025-08-18","https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB0FC6YDYHL",{"asin":275,"title":276,"brand":243,"imageUrl":277,"price":278,"rating":179,"reviews":179,"clickShare90":244,"clickShare360":279,"launchDate":280,"amazonUrl":281},"B0GYP1WH9Q","JIANHENG X2 Smart Knee Recovery Device - Cordless Knee Massager with Advanced Hot & Cold Contrast Therapy Electric Knee Brace with 6-Level Massage & Temperature Display for Knee & Sports Recovery","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F51k7PLDCYmL.jpg",236.64,0.0232,"2026-04-27","https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB0GYP1WH9Q",{"love":283,"hate":343,"returnReasons":394},[284,291,298,304,309,316,323,329,335,340],{"topic":285,"percentOfMentions":286,"verbatims":287},"Advertised Vs Actual Product",0.1471,[288,289,290],"Nice and works as advertised","As described","It gets the job done",{"topic":292,"percentOfMentions":293,"verbatims":294},"Joint Pain",0.10779999999999999,[295,296,297],"makes a big difference in relief from joint pain","Highly recommend for post knee surgery","Very helpful on the knee",{"topic":299,"percentOfMentions":300,"verbatims":301},"Heating Element",0.0588,[302,303],"he loves that he can heat","Heat, cooling and compression",{"topic":305,"percentOfMentions":300,"verbatims":306},"Quality-Overall",[307,308],"Excellent product","An amazing product",{"topic":310,"percentOfMentions":311,"verbatims":312},"Efficiency",0.053899999999999997,[313,314,315],"Works great","it works great","The product works great",{"topic":317,"percentOfMentions":318,"verbatims":319},"Muscle Pain Relief",0.049,[320,321,322],"This device is great for athletes, pre, post injuries","Great for post workout recovery","Works great after a workout",{"topic":324,"percentOfMentions":325,"verbatims":326},"Inflammation",0.0441,[327,328],"it has been incredibly helpful in relieving swelling","Reduces swelling and increases range of motion big time",{"topic":330,"percentOfMentions":331,"verbatims":332},"Battery Life",0.034300000000000004,[333,334],"The battery life is good, the compression, heat and cold are all strong to the point where I usually dial back the intensity of each on bare skin despite being somebody that usually goes full bore","The battery will handle several sessions",{"topic":336,"percentOfMentions":337,"verbatims":338},"Comfort-Overall",0.0294,[339],"It's working and convenient",{"topic":341,"percentOfMentions":337,"verbatims":342},"Posture Enhancer",[321],[344,350,357,363,368,372,378,383,387,391],{"topic":330,"percentOfMentions":345,"verbatims":346},0.1222,[347,348,349],"The score of 4 star is because the battery only lasted 3 sets of 15-20 minutes session","Great for what its worth the battery just doesnt last long have to charge it a lot","Terrible battery life",{"topic":351,"percentOfMentions":352,"verbatims":353},"Value For Money",0.11109999999999999,[354,355,356],"Sure, this product costs more than other knee therapy devices","Too expensive for me to risk waiting to hear from the company","pretty disappointing when you consider how much it costs",{"topic":358,"percentOfMentions":359,"verbatims":360},"Functionality-Overall",0.07780000000000001,[361,362],"nothing was working","Stopped working properly after a month",{"topic":364,"percentOfMentions":365,"verbatims":366},"Strap\u002FString Quality",0.0667,[367],"The velcro straps are not placed where they will allow the knee to bend",{"topic":369,"percentOfMentions":365,"verbatims":370},"Temperature Control",[371],"Doubted it went from hot to cold",{"topic":373,"percentOfMentions":374,"verbatims":375},"Size-Overall",0.0444,[376,377],"It also doesn't fit nicely","Huge for athletes",{"topic":305,"percentOfMentions":374,"verbatims":379},[380,381,382],"The quality assurance with this company is clearly non-existent as multiple reviews cite this same issue","the quality is just not there","Sadly, the quality of the product leaves a lot to be desired",{"topic":292,"percentOfMentions":384,"verbatims":385},0.0333,[386],"Useless post knee replacement surgery",{"topic":388,"percentOfMentions":384,"verbatims":389},"Heating",[390],"No more heat packs",{"topic":299,"percentOfMentions":384,"verbatims":392},[393],"It only cools about a quarter size of an area under each of the fans",[395,397,399,401,403,405,407,410,412,415],{"reason":292,"pct":396},0.20329999999999998,{"reason":351,"pct":398},0.1128,{"reason":358,"pct":400},0.10890000000000001,{"reason":285,"pct":402},0.0989,{"reason":388,"pct":404},0.07719999999999999,{"reason":373,"pct":406},0.0639,{"reason":408,"pct":409},"Compression",0.0622,{"reason":336,"pct":411},0.045,{"reason":413,"pct":414},"Charging",0.042800000000000005,{"reason":330,"pct":416},0.038900000000000004,[418,422,427],{"term":166,"volume":419,"growthQoq":420,"conversionRate":421},4302,0.7163,0.0222,{"term":423,"volume":424,"growthQoq":425,"conversionRate":426},"xpolar",2498,0.6183,0.0244,{"term":428,"volume":429,"growthQoq":430,"conversionRate":431},"xpolar x2 knee",2937,-0.6252,0.0133,[433,440,447,452,457,462],{"title":434,"href":435,"score":436,"verdict":437,"marketSize":438,"growth90":439},"cedar oil","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fcedar-oil",76,"launch",1187404.58,2.1443,{"title":441,"href":442,"score":443,"verdict":444,"marketSize":445,"growth90":446},"nutrapure glp1 cutting mix","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fnutrapure-glp1-cutting-mix",77,"watch",149064.66,9.4022,{"title":448,"href":449,"score":443,"verdict":437,"marketSize":450,"growth90":451},"dexcom g7","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fdexcom-g7",2003992.9,0.3992,{"title":453,"href":454,"score":443,"verdict":444,"marketSize":455,"growth90":456},"purelia","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fpurelia",635366.57,3.5967,{"title":458,"href":459,"score":443,"verdict":444,"marketSize":460,"growth90":461},"graduation napkins","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fgraduation-napkins",301763.96,3.8573,{"title":463,"href":464,"score":443,"verdict":444,"marketSize":465,"growth90":466},"credit card wand","\u002Fresearch\u002Fus\u002Fhealth-household\u002Fcredit-card-wand",418049.68,1.0132]