Ethylene vinyl acetate, usually referred to as EVA, is a commonly used material for outsoles, midsoles, sockliners, and even whole footwear. EVA is a material with unique properties like durability, flexibility, light weight and 100% waterproofing, which allow it to be perfectly suitable for comfortable, high quality winter boot manufacturing.
Structure of EVA material:
Benefits of EVA material in footwear production:
The micro cellular structure of EVA material is filled using a chemical blowing agent during the molding process which can release nitrogen gas into the material. This forms tiny bubbles which expand when the mold is opened, having the effect of making the finished unit increase rapidly in size to several times the internal volume of the mold. This helps to give EVA very good cushioning properties, which is one of the main reasons for its popularity in footwear bottoming components.
One of the main advantages of boots, made of EVA material, is the low weight. You will barely feel them while wearing, because they are 30-40% lighter then boots, made of rubber or PVC.
Every fisher man knows, that in the middle of winter, when the ice is covered with a thick ice layer, there is almost always water underneath it no matter if the temperature is below 0°C or not. The water gets on the surface of the ice through drilled holes and cracks. The thicker the snow layer, the closer to 0°C is the temperature under it, so the water doesn’t freeze. This is why the waterproofing of EVA material is so important. The boots are produced in one piece, they do not have seams and, therefore, are 100% waterproof.
Another advantage of EVA material is its elasticity. The material has excellent flex cracking resistance, even down to very cold temperatures.
NORFIN offers three models of winter boots made of EVA material.
YUKON – maximum operating temperature -50°C. The warmest NORFIN winter boots, which are made of EVA material. The boots feature two removable footbeds: in the insole and between the insole and the bottom; they keep the heat near feet during long-term dwelling on ice. The boots are completely waterproof, very light and warm. The deep protectors of soles ensures stability on ice and snow.
KLONDAIK – maximum operating temperature -40°C. If YUKON and LAPLAND boots are fully made of EVA, then KLONDAIK is a sort of hybrid, because its sole is made of highly durable rubber with a deep protector, to avoid cutting or pricking and ensure a safe grip on icy and slippery surfaces. There are special removable spikes in heels for additional stability on ice.
LAPLAND – maximum operating temperature -30°C. The lightest NORFIN boots made of EVA material. The boots are very warm and perfectly suitable for active fishing in the cold season.
Thanks to the thick and warm, three layer insoles, the boots are very warm and comfortable at even extremely low temperatures. The thickness of insoles depends on on the maximum operating temperature of the boots: Yukon insole is 12 mm thick , but the insoles of KLONDAIK and LAPLAND are 10 mm thick.The soft Polyester layer provides thermal insulation and absorbs and wicks away moisture. Heat reflecting aluminum foil keeps cold out and keeps body heat to the foot. The Felt layer retains warmth, thus ensuring necessary thermal insulation.
The upper part of the boots features snow protection made of durable Nylon with a button-push clamp.
YUKON and KLONDAIK feature a projection on the back part of the sole, which allows to remove the boots easily even without using hands.
Choose your boots carefully to ensure warmth and comfort of your feet during fishing in the winter season.
Trust in the experience of NORFIN!