1.Velvet fabric, fine texture, soft hand, comfortable to wear, elastic, no ball, good water absorption. 2.Memory cotton layer, seismic, decompression, heat preservation, heat insulation, etc. 3.The back is PU material, the hand feels fine, the density is low, the texture is soft, the wearing is comfortable and light, the dimensional stability is good, the shock absorption and the anti-slip performance are good.

http://olla.gr/2-pairs-2.5cm-pu-breathable-sport-height-increase-insoles-size-s/