Aetrex Monterey Thong Sandals (Men's) Leather Lynco orthotic arch supporitive footbeds for support - balance - and alignment. Great for people with plantar fasciitis. Adjustable strap and studs and stitch details. Full grain leather upper. Memory foam cushioning for customization & comfort. MC50-Black MC52-Brown Aegis anti-microbial technology embedded into the footbed to help protect against fungi- bacteria- and odor. Met-Bar-Pod reduces stress at ball-of-foot and the Medial Support Pod minimizes over-pronation.