{"product_id":"grubs-frostline-insulated-waterproof-5-0-boot","title":"Grubs Frostline Insulated Waterproof 5.0 Boot","description":"\u003cdiv class=\"product-description\"\u003e  \u003ch2\u003eFROSTLINE 5.0\u003c\/h2\u003e  \u003cp\u003e\u003cstrong\u003eFROSTLINE 5.0\u003c\/strong\u003e is insulated and waterproof, with excellent grip, designed for all-day comfort.\u003c\/p\u003e  \u003ch3\u003eKey Features\u003c\/h3\u003e  \u003cul\u003e    \u003cli\u003e\n\u003cstrong\u003e5MM INSU-FOAM ULTRA\u003c\/strong\u003e  Provides all-round foot comfort and insulation.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003e6mm NITROCELL footbed\u003c\/strong\u003e  Offers soft cushioning and contains microscopic nitrogen bubbles for insulation from cold surfaces.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eUNDERFOOT CHASSIS\u003c\/strong\u003e  Delivers a stable, sure-footed platform.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eHEXZORB technology\u003c\/strong\u003e  Absorbs heel strike shock for long-lasting comfort.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eSUPERDRI lining\u003c\/strong\u003e  Hard-wearing, moisture-wicking, and resistant to fungus and rot for odor-free performance.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eTRAX outsole\u003c\/strong\u003e  Offers superior grip on various surfaces, designed to move with your foot.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eComfort Rating:\u003c\/strong\u003e -20ºC to +20ºC\u003c\/li\u003e  \u003c\/ul\u003e  \u003ch3\u003eINSU-FOAM ULTRA Technology\u003c\/h3\u003e  \u003cp\u003eMost GRUBS® Rubber footwear uses our self-insulating INSU-FOAM ULTRA bootie, acting as a neutral barrier between your foot and the environment. It is both waterproof and insulating, surpassing traditional waterproof membranes. Our boots are tested to EN ISO 20344:2004 5.7 standards.\u003c\/p\u003e  \u003cp\u003eThe bootie uses a super-stretch Chloroprene material (like that used in deep sea dry suits) which stretches up to 300%. It's laminated with a 4-way stretch nylon jersey, allowing expansion in width and height. When combined with SUPERDRI terry knit lining, the laminate stretches up to 150% while keeping moisture away.\u003c\/p\u003e  \u003cp\u003eINSU-FOAM ULTRA features a fine micro-cellular structure that prevents heat transfer. Even at 3.5mm thickness, it remains fully waterproof. With a compression set of less than 7% (vs. 2025% for typical neoprene), it stays soft and comfortable for longer. Competing materials like SBR are stiffer, degrade faster, and are more likely to leak.\u003c\/p\u003e  \u003ch3\u003e5.0 TECHNOLOGY\u003c\/h3\u003e  \u003cp\u003eThe bootie is lined with SUPERDRI terry knit that offers 100% stretch to fit most calves. As INSU-FOAM ULTRA is temperature neutral, it keeps your feet comfortable from 85ºF to sub-zero conditions for extended wear.\u003c\/p\u003e  \u003ch3\u003eTRAX Sole\u003c\/h3\u003e  \u003cp\u003eThe TRAX sole uses DURAPRENE rubber and integrates HEXZORB technology to absorb shock and enhance grip. The tread is engineered with zones for grip, traction, stability, and braking, moving with the action of your foot.\u003c\/p\u003e  \u003ch3\u003eSizing Guide\u003c\/h3\u003e  \u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e    \u003cthead\u003e      \u003ctr\u003e        \u003cth\u003eUK Size\u003c\/th\u003e        \u003cth\u003eBoot Height (mm)\u003c\/th\u003e        \u003cth\u003eCalve Width (mm)\u003c\/th\u003e      \u003c\/tr\u003e    \u003c\/thead\u003e    \u003ctbody\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 3\u003c\/td\u003e\n\u003ctd\u003e370mm\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 4\u003c\/td\u003e\n\u003ctd\u003e370mm\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 5\u003c\/td\u003e\n\u003ctd\u003e375mm\u003c\/td\u003e\n\u003ctd\u003e410mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 6\u003c\/td\u003e\n\u003ctd\u003e380mm\u003c\/td\u003e\n\u003ctd\u003e410mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 7\u003c\/td\u003e\n\u003ctd\u003e385mm\u003c\/td\u003e\n\u003ctd\u003e420mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 8\u003c\/td\u003e\n\u003ctd\u003e390mm\u003c\/td\u003e\n\u003ctd\u003e420mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 9\u003c\/td\u003e\n\u003ctd\u003e395mm\u003c\/td\u003e\n\u003ctd\u003e430mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 10\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003ctd\u003e430mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 11\u003c\/td\u003e\n\u003ctd\u003e405mm\u003c\/td\u003e\n\u003ctd\u003e440mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 12\u003c\/td\u003e\n\u003ctd\u003e410mm\u003c\/td\u003e\n\u003ctd\u003e440mm\u003c\/td\u003e\n\u003c\/tr\u003e      \u003ctr\u003e\n\u003ctd\u003eUK 13\u003c\/td\u003e\n\u003ctd\u003e415mm\u003c\/td\u003e\n\u003ctd\u003e450mm\u003c\/td\u003e\n\u003c\/tr\u003e    \u003c\/tbody\u003e  \u003c\/table\u003e  \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Our Wellington Boots include a 15mm allowance for wool blend\/combination socks.\u003c\/p\u003e  \u003cp\u003eWe recommend purchasing your regular comfortable footwear size. For half sizes, consider sizing down due to this allowance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Grubs Boots","offers":[{"title":"Green \/ 3","offer_id":59790829257049,"sku":"FRT-333H-Green-3","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 3","offer_id":59790829289817,"sku":"FRT-551H-Violet-3","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 3","offer_id":59790829322585,"sku":"FRT-000H-Black-3","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 4","offer_id":59790829355353,"sku":"FRT-333H-Green-4","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 4","offer_id":59790829388121,"sku":"FRT-551H-Violet-4","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 4","offer_id":59790829420889,"sku":"FRT-000H-Black-4","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5","offer_id":59790829453657,"sku":"FRT-333H-Green-5","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 5","offer_id":59790829486425,"sku":"FRT-551H-Violet-5","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 5","offer_id":59790829519193,"sku":"FRT-000H-Black-5","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 6","offer_id":59790829551961,"sku":"FRT-333H-Green-6","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 6","offer_id":59790829584729,"sku":"FRT-551H-Violet-6","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 6","offer_id":59790829617497,"sku":"FRT-000H-Black-6","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 7","offer_id":59790829650265,"sku":"FRT-333H-Green-7","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 7","offer_id":59790829683033,"sku":"FRT-551H-Violet-7","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 7","offer_id":59790829715801,"sku":"FRT-000H-Black-7","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 8","offer_id":59790829748569,"sku":"FRT-333H-Green-8","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 8","offer_id":59790829781337,"sku":"FRT-551H-Violet-8","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 8","offer_id":59790829814105,"sku":"FRT-000H-Black-8","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 9","offer_id":59790829846873,"sku":"FRT-333H-Green-9","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 9","offer_id":59790829879641,"sku":"FRT-000H-Black-9","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 10","offer_id":59790829912409,"sku":"FRT-333H-Green-10","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 10","offer_id":59790829945177,"sku":"FRT-000H-Black-10","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 11","offer_id":59790829977945,"sku":"FRT-333H-Green-11","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 11","offer_id":59790830010713,"sku":"FRT-000H-Black-11","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 12","offer_id":59790830043481,"sku":"FRT-333H-Green-12","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 12","offer_id":59790830076249,"sku":"FRT-000H-Black-12","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 13","offer_id":59790830109017,"sku":"FRT-333H-Green-13","price":101.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 13","offer_id":59790830141785,"sku":"FRT-000H-Black-13","price":101.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/1405\/1417\/files\/grubs-frostline-insulated-waterproof-5.0-green-boot-colour-green-size-3-1-119065-p_9bf75c72-0b91-4059-9341-acadb8e9f792.webp?v=1791491426","url":"https:\/\/www.saddlemasters.co.uk\/products\/grubs-frostline-insulated-waterproof-5-0-boot","provider":"Saddle Masters","version":"1.0","type":"link"}