The Aetrex Gabby Quarter Strap Sandal is a fully adjustable sandal featuring the Aetrex "Healthy 3": an orthotic Lynco® footbed, memory foam cushioning, and anti-microbial technology. Fully adjustable quarter strap. Microfiber footbed & lining. Lynco® orthotic footbed for balance, alignment, and support. Memory foam cushioning for customized comfort. Anti-microbial technology to keep feet fresh.