Superfeet Slim-Fit Athletic Cushion Insole 14 One hook-and-loop and the other

One hook-and-loop and the other secure zipper closure

Durability: Impact resistant IK07 (EN/IEC 62262)

Fabric Content: 80% Lambswool/20% Nylon

The Hopper Flip 8 has the insulation power only a YETI can offer and is engineered to be tough because flying solo doesn't mean you wont get a little dirty

Superfeet Slim-Fit Athletic Cushion Insole 14 One hook-and-loop and the otherSuperfeet Work Slim Fit Cushion insoles offer lightly structured, durable support in a slim profile, made to fit well in athletic style work footwear, even some without removable liners. These cushioned insoles provide industrial strength comfort for long hours on your feet. The premium foam layer guards against foot fatigue, while the Moisturewick top cover helps reduce odors, keeping feet fresh. Trim to fit your shoe size. Signature Superfeet