High Quality Original FELT InsolesAvalible sizes:36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46High QualityMost commonly used in rubber boots and work boots.The thickness of the insert 5 mm.Weight for size. 46 is 44 grams/ pairThey prevent the formation of sores and give softness to the feet.