Seldom used No issues,only needs a bit cleaning Lightweight technology Size 6 Comfy and flexible Breathable Orig price: $150 Features: Breathable nubuck and mesh upper with three adjustable hook and loop closures. Soft lycra lining. EVA LiTe foam provides superior cushioning and comfort. Synergy System absorbs shock in the heel, and designed to return energy in the ball of the foot. Transverse flex grooves across the outsole mimic natural barefoot stride. Flex zones promote a smooth transition from heel to forefoot. Dorsal groove on the outsole reduces torsional stress.