The FatFish 949i insulated pop-up shelter features IQ Insulated Quilted Fabric. Made up of two layers of IceTight fabric and one layer of insulation, this fabric provides superior protection from the coldest of conditions. Not only will this insulated shelter keep you warm and dry on the harshest of days, but the insulated design is 35% warmer than a comparable non-insulated shelter. This pop-up portable features 61 square feet of fishable area enough room for 3 to 4 fishermen. In addition, this FatFish includes large removable windows, self-tapping ice anchors, YKK zippers, and large mesh storage pockets to keep your essential ice fishing gear handy.