Next to nature, made for the big city. We want a lightweight sneaker to dash through our day in, but can?t always be bothered with the whole socks thing. We want barefoot minimalism, but without the city sidewalk residue on our soles. Thankfully there's the SF Barefoot Sneaker, a Sock Free Sneaker—thanks to the stretchy breathable mesh sock styling. Synthetic mesh upper. Puncture resistant, ultra-thin TPU sole. 36(6), 37(7), 38(7½), 39(8), 40(9), 41(10), 42(11).