silicone shoe insole 1. material : good quality silicone raw material 2. green product , eco-friendly , ROHS SGS pass shoe insole feature:1.material: silicone , TPU ,TPR 2.ergonomic comfort , absorb foot pressure,relax your foot at all the time.3.Absorb sweat, deodorize and anti-mildew.4.Improve blood circulation.5.enhance abrasion between foot and shoe . 6.customised design and packing .