The boy who materialized at his side had done so with no more noise than a mouse, on bare feet with soles tough as horn.
Vibram: a brand name for a traditional tough and heavy-duty patterned sole which wears well.
They crawled up the slope, and Thinner's statement about having tough soles proved itself.
She was barefoot, but the tough soles of her feet convinced him that she had spent most of her life without wearing foot coverings.
Their feet were covered with tall leather boots, or shoes of the old Roman style with tough soles and thick uppers which laced up the leg with stout leather thongs.
The cloudy water made the rock slick enough to cause even the tough sole of a mammoth's foot to slip, and several times poor Sunfire had to be rescued from stumbles.
It would also be used to join tough soles to softer foot coverings.
Anticipating a rough climb into the ruins of Castledown, she had exchanged the sandals she normally favored for ankle boots with tough, flexible soles.
She might have been mistaken for a human toddler, except for her fur-covered bare feet with their tough, leathery soles.
The ground underfoot was getting stony and rough, and even his tough soles were taking punishment.