Recycled polyester uppers feature a Durable Water Repellant finish to fend off light rain and snow, and are down-resistant and lightweight for easy packing
650-fill-power goose down insulation offers superior warmth and compressibility for storage and transport
Recycled polyester linings supply moisture-wicking performance and next-to-skin comfort
Heavy-duty nylon outsoles are reinforced for lasting wear and reliability; polyurethane beads improve traction
Sierra Designs Down Packable booties are highly compressible and come with their own stuff sack
Sierra Designs' bootie sizing:
Small fits men's shoe sizes 7 - 8
Medium fits men's shoe sizes 8.5 - 9.5
Large fits men's shoe sizes 10 - 11
X Large fits men's shoe sizes 11.5 - 13