HappystepCotton Terry Cloth Insoles, Barefoot Shoe Inserts, Sweat Absorption, Odor Control, Moisture-Wicking, Washable & Reusable, Perfect Fit for All Footwear, 2 Pairs of Black (Men Size 11)

I bought these to try as a replacement for no-show socks which usually end up not staying in position, to enable me to wear trainers/boat shoes sockless. And they are perfect, even in Skechers shoes with memory foam in them. I now have loads of no-show socks which I'll never wear again!