The Vibram FiveFingers KSO is designed to simulate walking or
running barefoot, but with the protection of a shoe.
The separated toe
compartments provide the flexibility and individual muscle movements of
a bare foot, while the performance rubber sole ensures protection and
solid grip. The stretchy upper material is quick-drying and
abrasion-resistant.
The FiveFingers KSO has a thin, abrasion-resistant stretch nylon and
breathable mesh upper that wraps your entire forefoot to “Keep Stuff
Out.”
The shoe is also machine washable and features an anti-microbial
footbed.
Sizing:
Sizing is determined by foot length. Vibram recommends standing with
your heels against a flat wall, sliding a ruler under each foot,
measuring the longest toe, and taking the longer of the two
measurements. If your foot
length varies by more than 1/6 inch, or if your second toe is more than 1/6 inch longer than your big toe, it may be difficult to achieve a
satisfactory fit.
Foot length in inches (+ or - 1/8") to KSO sizes:
9 3/4" = 38
10" = 39
10 1/4" = 40
10 1/2" = 41
10 3/4" = 42
11" = 43
11 1/4" = 44
11 1/2" = 45
11 3/4" = 46
12" = 47
12 1/4" = 48