EST (Early Season Technology - Opening morning is the most important day of the year for hunters and although it is so important, there have been little to no garments created for that specific time of year. And as every hunter knows, unseasonably warm temperatures are all too common in the early season. Staying warm has always been the duck hunters focus but for certain times of year and in certain geographical locations, not overheating can be just as challenging. That's why Drake created EST, Early Season Technology. EST is 100% waterproof and windproof with Heat-Escape Vents for those days when a coat is just too much. EST Eqwader was developed for those days when maximum breathability is a must. Whether worn in or out of waders, the body's heat exertion areas are 15 times more breathable than the 100% waterproof/ windproof upper areas. So whether you are caught in rain storms, or unseasonably warm weather, EST has you covered. No reason to be uncomfortable, get EST hunting apparel.