Tundra - Jacket with Full Zipper Front. The Tundra is constructed of 10.5 oz. heavyweight 100% spun polyester anti-pilling Panda Fleece (TM). Two front pockets with zippers, full-zip front, and elastic waistband and cuffs. Big & Tall - Denotes styles available in 5XL-6XL sizes and LT-6XLT sizes. In some cases, up to 4XLT.