Allbirds hazy sienna Natural Run Cap - Unisex new Lightweight Performance Cap Highlights Lightweight, stretch fabric wicks sweat Perforated side panels keeps you cool Adjustable back keeps things comfy and secure Break a sweat, not the planet with this ultra-light, breathable run cap. Made with a mix of sustainable materials like ZQ Merino wool, it wicks moisture, blocks the sun and keeps you cool mile after mile. Best For: Running, walking, hiking Materials: 51% ZQ Merino Wool, 32% Recycled Nylon, 11% Nylon, 6% Elastane Fit: Adjustable, unisex included image of other color for fit reference only Allbirds hazy sienna Natural Run Cap - Unisex new