On cold trail days and chilly shoulder-season mornings, the Aconcagua is our go-to insulated jacket for women who want warmth without bulk. 550-fill goose down in the core holds heat, while Heatseeker Eco synthetic at the sides and underarms keeps insulating when sweat or damp air creeps in. WindWall fabric cuts drafts on exposed ridgelines.

• Hybrid insulation: 550-fill goose down in the core for packable warmth, with 150g Heatseeker Eco recycled polyester at the sides and underarms where you sweat most
• WindWall shell fabric blocks wind noticeably better than standard ripstop, which matters on exposed ridgelines and open trail
• Non-PFC DWR finish sheds light rain and trail mist without fluorinated chemistry
• Zippered hand pockets keep your phone and essentials secure, and elastic cuffs seal out cold air at the wrists
• Wear it alone on dry autumn hikes or layer it under a hardshell when conditions turn serious. Available in TNF Black and White Dune, sizes S–L