Yulex Wading Socks with Gravel Guard

Exterior: 3.5mm 85% Yulex® natural rubber/15% synthetic rubber by polymer content. Lining: (upper) 100% recycled polyester jersey; (footbed) 95% nylon/5% spandex. Natural rubber is from sources that are Forest Stewardship Council® certified by Preferred by Nature™. Made in a Fair Trade Certified™ factory