Stay warm on the water without the bulk in the Simms Women’s Midstream Insulated Jacket. Lightweight yet impressively warm PrimaLoft Gold insulation traps your body heat, while the wind-resistant outer material fends off biting gusts, all without restricting your movement as you cast. An adjustable hem lets you cinch the bottom tight to prevent any chilly air from creeping in, and multiple pockets accommodate essentials like extra line or your fly box. .