A snug, more athletic fit; Thicker sole for improved performance; Neoprene side panels for arch and side-of-foot protection; Low enough to be cool and high enough to keep sand out; Made in USA; Barefoot feel; Improve balance and feel, while protecting feet from the elements; 3-4mm thick neoprene Action Flex Soles protect against heat, cold, sharp objects, and dirt; Elastic Duratex coating on sole gives strength with a comfortable elastic fit; Neoprene Side panels provide protection, stabilization and a snug fit