Neoprene Socks Camping & Travel Tents & Tent Accessories Danner’s famous stitchdown construction provides Size:38 Danner’s famous stitchdown construction provides a wider platform for stability and the lace to toe system provides a secure fit to minimize potentially harmful soundsLowers potentially dangerous noise levels above 85 dBHear safe sound levels (with filter caps out) as if you weren't wearing ear plugsPatented EarLock® retention rings utilize seven contact points to lock earpieces in place and fit the same way every timeSoft memory foam Canal™ Comply Tips provide secure seals in ear canals and all day comfort Made from hypoallergenic 4 way stretch our Neoprene Socks ensure maximum comfort and warmth