FRYE Men's Wayde Engineer Inside Zip Boot Black Engineer boot with an inside zip in vegetable tanned, soft Soft Vintage Leather. Soft Vintage Soft Vintage Leather upper. Soft Vintage Leather lined. Soft Vintage Leather outsole with rubber forepart. Full inside zip. Size and Fit: 7" shaft height. 12 1/2" shaft circumference. 1 1/4" heel. FRYE Men's Wayde Engineer Inside Zip Boot Black