Simms Heavyweight Baselayer Bottom #13308 When days get shorter, stay in the game longer with Heavyweight Baselayer Bottoms powered by stretch micro-grid fleece for optimum mobility, warmth and moisture wicking comfort. * Smooth jacquard face with grid-fleece backside adds stretch and micro pockets to trap heat and wick away moisture Flat elastic waistband and fly pouch designed with minimal seams for a chafe-free, next to skin comfort. * Stretch panels strategically designed from lower calf to ankle cuffs allow for easy integration when worn with socks and paired with waders or bibs and boots. Body - 190 gsm 96% polyester, 4% elastane micro grid fleece finished with Polygiene antimicrobial + moisture management Lower Legs - 88% polyester, 12% elastic